7 Spaghetti Squash Casserole Recipes: A Healthy Twist on Comfort Food

Introduction

When it comes to comfort food, casseroles have a special place in our hearts. They’re warm, filling, and packed with flavor. But what if we told you that you could enjoy that comforting feeling without the carb-heavy pasta? Enter spaghetti squash casseroles, a creative and healthier alternative that’s taking the culinary world by storm. In this article, we’ll introduce you to seven delectable spaghetti squash casserole recipes that will satisfy your cravings while keeping your waistline in check.

Comfort food often conjures up images of hearty pasta dishes, but what if there was a way to enjoy those same flavors without the guilt? Spaghetti squash casseroles are here to make that possible. Spaghetti squash, with its unique stringy texture, makes an excellent substitute for traditional pasta, offering a low-carb and nutritious foundation for your favorite casserole creations.

In this article, we’ll dive into the world of spaghetti squash casserole recipes. Each recipe brings its own twist to the table, showcasing the versatility of this remarkable vegetable. Whether you’re a fan of classic flavors or looking for something more adventurous, there’s a spaghetti squash casserole here for you.

Recipe 1: Classic Spaghetti Squash Casserole

• Ingredients

• 1 medium spaghetti squash

• 1 tablespoon olive oil
  1 cup diced onion
  2 cloves garlic, minced
  1 pound ground beef or ground turkey
  1 (24-ounce) jar of your favorite marinara sauce
  1 teaspoon dried basil
  1 teaspoon dried oregano
  Salt and pepper to taste
  2 cups shredded mozzarella cheese
  1/2 cup grated Parmesan cheese
• Fresh basil leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.
Shred the Squash:

Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Preparing the Sauce: Sauté Onion and Garlic: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Brown the Meat: Add the ground beef or turkey to the skillet. Cook until it’s browned and no longer pink. Drain any excess fat.

Add the Sauce and Seasoning: Pour in the marinara sauce and add the dried basil and dried oregano. Season with salt and pepper to taste. Stir to combine. Let the sauce simmer for 5-7 minutes to meld the flavors.

Assembling the Casserole: Layer the Squash: In a greased 9×13-inch baking dish, spread half of the roasted spaghetti squash evenly as the bottom layer.

Add the Meaty Sauce: Spoon half of the meat sauce over the squash layer, spreading it out evenly.

Cheesy Goodness: Sprinkle half of the shredded mozzarella cheese and half of the grated Parmesan cheese over the sauce.

Repeat the Layers: Repeat the layers with the remaining squash, meat sauce, and cheese.

Baking the Casserole: Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until the cheese is bubbly and golden brown on top.

Garnish and Serve: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh basil leaves for a burst of freshness.

Enjoy Your Classic Spaghetti Squash Casserole: Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Comfort: Grab a fork and savor the comforting combination of roasted spaghetti squash, savory meat sauce, and melted cheese. It’s a classic delight!

Pro Tip: Customize your casserole with additional vegetables like sautéed spinach or bell peppers for added flavor and nutrition.Now you have a timeless recipe for Classic Spaghetti Squash Casserole that’s perfect for those looking for a wholesome and delicious meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large mixing bowl, combine the spaghetti squash strands, marinara sauce, and half of the mozzarella and Parmesan cheese. Season with salt and pepper.

Transfer the mixture to a casserole dish and sprinkle the remaining cheese on top.

Bake for 20-25 minutes or until the casserole is bubbling and the cheese is golden.

Garnish with fresh basil leaves before serving.

This classic spaghetti squash casserole captures the essence of Italian comfort food with a healthier twist.

Recipe 2: Cheesy Spinach and Spaghetti Squash Casserole

• Ingredients

• 1 medium spaghetti squash

1 tablespoon olive oil
4 cups fresh spinach, chopped
1 cup diced onion
2 cloves garlic, minced
1 cup ricotta cheese
1/2 cup grated Parmesan cheese
1 1/2 cups shredded mozzarella cheese
1 teaspoon dried basil
1 teaspoon dried oreganoSalt and pepper to tasteFresh basil leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Sautéing Spinach and Onion: Sauté Onion and Garlic: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Add Spinach: Add the chopped spinach to the skillet. Sauté for an additional 2-3 minutes until the spinach wilts. Remove from heat.

Creating the Cheesy Mixture: Cheese Blend: In a mixing bowl, combine the ricotta cheese, grated Parmesan cheese, 1 cup of shredded mozzarella cheese, dried basil, dried oregano, salt, and pepper. Mix until the cheese mixture is well blended.

Assembling the Casserole: Layer the Squash: In a greased 9×13-inch baking dish, spread half of the roasted spaghetti squash evenly as the bottom layer.

Add Spinach Layer: Spoon the sautéed spinach and onion mixture over the squash layer, spreading it out evenly.

Cheesy Goodness: Dollop half of the cheese mixture over the spinach layer and spread it out gently.

Repeat the Layers: Repeat the layers with the remaining squash, spinach, and cheese mixture.

Baking the Casserole: Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through, the cheese is bubbly, and it’s slightly golden on top.

Garnish and Serve: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh basil leaves for a touch of freshness.

Enjoy Your Cheesy Spinach and Spaghetti Squash Casserole: Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Cheesy Delight: Grab a fork and savor the comforting combination of roasted spaghetti squash, spinach, and layers of cheesy goodness. It’s a cheesy spinach delight!

Pro Tip: Feel free to add a dash of crushed red pepper flakes for a hint of heat if you like a little spice.Now you have a scrumptious recipe for Cheesy Spinach and Spaghetti Squash Casserole that’s perfect for a nutritious and cheesy meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large mixing bowl, combine the spaghetti squash strands, chopped spinach, ricotta cheese, half of the mozzarella, half of the Parmesan cheese, minced garlic, salt, and pepper.

Transfer the mixture to a casserole dish and sprinkle the remaining mozzarella and Parmesan cheese on top.

Bake for 20-25 minutes or until the casserole is bubbling and the cheese is golden.

Garnish with fresh parsley before serving.

This cheesy spinach and spaghetti squash casserole packs a nutritious punch without compromising on flavor.

Recipe 3: Spaghetti Squash and Ground Turkey Casserole

• Ingredients: 1 medium spaghetti squash

• 1 tablespoon olive oil
  1 pound lean ground turkey
  1 cup diced onion
  2 cloves garlic, minced
  1 (24-ounce) can of crushed tomatoes
  1 teaspoon dried basil
  1 teaspoon dried oregano
  Salt and pepper to taste
  1 1/2 cups shredded mozzarella cheese
• Fresh basil leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Cooking the Ground Turkey: Sauté Onion and Garlic: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Brown the Turkey: Add the lean ground turkey to the skillet. Cook until it’s browned and no longer pink, breaking it into crumbles as it cooks. Drain any excess fat.

Preparing the Sauce: Add Crushed Tomatoes and Seasoning: Pour in the crushed tomatoes and add the dried basil, dried oregano, salt, and pepper. Stir to combine. Let the sauce simmer for 5-7 minutes to meld the flavors.

Assembling the Casserole: Layer the Squash: In a greased 9×13-inch baking dish, spread half of the roasted spaghetti squash evenly as the bottom layer.

Add Ground Turkey Layer: Spoon half of the cooked ground turkey over the squash layer, spreading it out evenly.

Sauce and Cheese: Pour half of the tomato sauce over the turkey layer. Sprinkle half of the shredded mozzarella cheese on top.

Repeat the Layers: Repeat the layers with the remaining squash, ground turkey, sauce, and cheese.

Baking the Casserole: Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through, the cheese is bubbly, and it’s slightly golden on top.

Garnish and Serve: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh basil leaves for a touch of freshness.
Enjoy Your Spaghetti Squash and Ground Turkey Casserole:

Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Nutritious Delight: Grab a fork and savor the satisfying combination of roasted spaghetti squash, lean ground turkey, and flavorful sauce. It’s a nutritious delight!

Pro Tip: Customize your casserole by adding sautéed vegetables like bell peppers or mushrooms for extra flavor and nutrition.Now you have a hearty recipe for Spaghetti Squash and Ground Turkey Casserole that’s perfect for a balanced and flavorful meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large skillet, brown the ground turkey over medium heat until cooked through. Season with salt and pepper.

Add the diced bell peppers and onions to the skillet and cook until they soften.

In a large mixing bowl, combine the spaghetti squash strands, cooked ground turkey, marinara sauce, and half of the mozzarella cheese. Season with salt and pepper.

Transfer the mixture to a casserole dish and sprinkle the remaining mozzarella cheese on top.

Bake for 20-25 minutes or until the casserole is bubbling and the cheese is golden.

Garnish with fresh basil leaves before serving.

This spaghetti squash and ground turkey casserole offers a hearty and protein-rich alternative to traditional pasta dishes.

Recipe 4: Mediterranean-Inspired Spaghetti Squash Casserole

• Ingredients

• 1 medium spaghetti squash

2 tablespoons olive oil
1 cup diced red bell pepper
1 cup diced red onion
2 cloves garlic, minced
1 (14-ounce) can of diced tomatoes, drained
1/2 cup pitted Kalamata olives, sliced
1/2 cup crumbled feta cheese
1/4 cup chopped fresh basil leaves
1 teaspoon dried oregano
Salt and pepper to tasteFresh basil leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Sautéing Vegetables: Sauté Onion and Garlic: In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add the diced red onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Add Red Bell Pepper: Add the diced red bell pepper to the skillet. Sauté for an additional 3-4 minutes until the pepper softens.

Assembling the Casserole: Combine Squash and Vegetables: In a large mixing bowl, combine the roasted spaghetti squash strands with the sautéed vegetables.

Add Mediterranean Flavors: Stir in the drained diced tomatoes, sliced Kalamata olives, crumbled feta cheese, chopped fresh basil, dried oregano, salt, and pepper. Mix well to incorporate all the Mediterranean flavors.

Baking the Casserole: Grease and Layer: Grease a 9×13-inch baking dish. Transfer the spaghetti squash mixture into the dish, spreading it out evenly.

Drizzle with Olive Oil: Drizzle the remaining 1 tablespoon of olive oil over the top of the casserole.

Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through and slightly golden on top.

Garnish and Serve: Garnish with Fresh Basil: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh basil leaves for a burst of freshness.
Enjoy Your Mediterranean-Inspired Spaghetti Squash Casserole:

Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Mediterranean Flavor: Grab a fork and savor the delightful combination of roasted spaghetti squash, Mediterranean vegetables, olives, and feta cheese. It’s a taste of the Mediterranean in every bite!

Pro Tip: Feel free to add grilled chicken or chickpeas for extra protein, turning this into a complete meal.Now you have a flavorful recipe for Mediterranean-Inspired Spaghetti Squash Casserole that’s perfect for those seeking a healthy and tasty dish. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large mixing bowl, combine the spaghetti squash strands, diced tomatoes, Kalamata olives, crumbled feta cheese,minced garlic, chopped basil, salt, and pepper.

Drizzle with olive oil and toss to combine.

Transfer the mixture to a casserole dish.

Bake for 15-20 minutes to allow the flavors to meld.

Garnish with additional fresh basil before serving.

This Mediterranean-inspired spaghetti squash casserole offers a burst of Mediterranean flavors in every bite.

Recipe 5: Vegan Spaghetti Squash and Black Bean Casserole

• Ingredients:

• 1 medium spaghetti squash

2 tablespoons olive oil
1 cup diced red bell pepper
1 cup diced red onion
2 cloves garlic, minced
1 (15-ounce) can of black beans, drained and rinsed
1 cup corn kernels (fresh, frozen, or canned)
1 teaspoon ground cumin
1 teaspoon chili powder
Salt and pepper to taste
1 cup vegan shredded cheese (optional)Fresh cilantro leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Sautéing Vegetables: Sauté Onion and Garlic: In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add the diced red onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Add Red Bell Pepper: Add the diced red bell pepper to the skillet. Sauté for an additional 3-4 minutes until the pepper softens.

Adding Beans and Spices: Combine Black Beans and Corn: To the skillet with sautéed vegetables, add the drained and rinsed black beans and corn kernels. Stir to combine.

Season with Spices: Sprinkle ground cumin, chili powder, salt, and pepper over the bean and vegetable mixture. Stir well to distribute the flavors evenly.

Assembling the Casserole: Grease and Layer: Grease a 9×13-inch baking dish. Transfer the roasted spaghetti squash strands into the dish, spreading them out evenly as the bottom layer.

Add Bean Mixture: Spoon the black bean and vegetable mixture over the spaghetti squash layer, spreading it out evenly.

Optional Vegan Cheese: If desired, sprinkle vegan shredded cheese evenly over the top of the casserole.

Baking the Casserole: Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through, and the vegan cheese (if used) is melted and slightly golden on top.

Garnish and Serve: Fresh Cilantro Garnish: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh cilantro leaves for a burst of freshness.
Enjoy Your Vegan Spaghetti Squash and Black Bean Casserole:

Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Vegan Delight: Grab a fork and savor the hearty combination of roasted spaghetti squash, black beans, and flavorful spices. It’s a vegan delight!

Pro Tip: Customize your casserole with your favorite vegan toppings such as avocado slices, vegan sour cream, or salsa for added flavor.Now you have a scrumptious recipe for Vegan Spaghetti Squash and Black Bean Casserole that’s perfect for a satisfying and plant-based meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large skillet, sauté the diced bell peppers and onions until they soften.

In a large mixing bowl, combine the spaghetti squash strands, black beans, sautéed bell peppers and onions, vegan shredded cheese, nutritional yeast (if using), salt, and pepper.

Transfer the mixture to a casserole dish.

Bake for 20-25 minutes or until the casserole is heated through.

Garnish with fresh cilantro leaves before serving.

This vegan spaghetti squash and black bean casserole is a plant-based delight that doesn’t skimp on flavor or protein.

Recipe 6: Spaghetti Squash Casserole with Italian Sausage

• Ingredients

• 1 medium spaghetti squash
• 1 tablespoon olive oil
  1 pound Italian sausage (mild or spicy, based on your preference)
  1 cup diced onion
  2 cloves garlic, minced
  1 (24-ounce) jar of marinara sauce
  1 teaspoon dried basil
  1 teaspoon dried oregano
  Salt and pepper to taste
  1 1/2 cups shredded mozzarella cheese
  1/2 cup grated Parmesan cheese
• Fresh basil leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Cooking the Italian Sausage: Sauté Onion and Garlic: In a large skillet, heat the olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Cook the Sausage: Add the Italian sausage to the skillet. Cook it thoroughly, breaking it into crumbles as it cooks. Drain any excess fat.

Preparing the Sauce: Add Marinara Sauce and Seasoning: Pour in the marinara sauce and add the dried basil, dried oregano, salt, and pepper. Stir to combine. Let the sauce simmer for 5-7 minutes to meld the flavors.

Assembling the Casserole: Layer the Squash: In a greased 9×13-inch baking dish, spread half of the roasted spaghetti squash evenly as the bottom layer.

Add Sausage Layer: Spoon half of the cooked Italian sausage over the squash layer, spreading it out evenly.

Sauce and Cheese: Pour half of the marinara sauce over the sausage layer. Sprinkle half of the shredded mozzarella cheese and half of the grated Parmesan cheese on top.

Repeat the Layers: Repeat the layers with the remaining squash, sausage, sauce, and cheese.

Baking the Casserole: Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through, the cheese is bubbly, and it’s slightly golden on top.

Garnish and Serve: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh basil leaves for a touch of freshness.

Enjoy Your Spaghetti Squash Casserole with Italian Sausage: Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Hearty Delight: Grab a fork and savor the comforting combination of roasted spaghetti squash, savory Italian sausage, and melted cheese. It’s a hearty delight!

Pro Tip:Customize your casserole with a sprinkle of red pepper flakes for a hint of spice if you like it a little fiery.Now you have a flavorful recipe for Spaghetti Squash Casserole with Italian Sausage that’s perfect for those craving a hearty and satisfying meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large skillet, brown the Italian sausage over medium heat, breaking it into crumbles as it cooks. Season with salt and pepper.

Add the diced bell peppers and onions to the skillet and cook until they soften.

In a large mixing bowl, combine the spaghetti squash strands, cooked Italian sausage, marinara sauce, and half of the mozzarella cheese. Season with salt and pepper.

Transfer the mixture to a casserole dish and sprinkle the remaining mozzarella cheese on top.

Bake for 20-25 minutes or until the casserole is bubbling and the cheese is golden.

Garnish with fresh parsley before serving.

This spaghetti squash casserole with Italian sausage brings the bold flavors of Italy to your dinner table.

Recipe 7: Spaghetti Squash and Mushroom Casserole

• Ingredients: 1 medium spaghetti squash

2 tablespoons olive oil
1 pound mushrooms, sliced
1 cup diced onion
2 cloves garlic, minced
1 teaspoon dried thyme
Salt and pepper to taste
1 cup shredded Gruyère cheese (or your favorite melting cheese)Fresh parsley leaves for garnish (optional)

Directions

Preparing the Squash: Preheat the Oven: Preheat your oven to 375°F (190°C).

Cut and Scoop: Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place the halves, cut side down, on a baking sheet lined with parchment paper.

Roast the Squash: Roast the squash in the preheated oven for 35-45 minutes or until the flesh is tender and easily shreds into “spaghetti” with a fork. Remove from the oven and let it cool slightly.

Shred the Squash: Use a fork to scrape the flesh of the squash, creating spaghetti-like strands. Place the strands in a bowl and set aside.

Sautéing Mushrooms and Onions: Sauté Onion and Garlic: In a large skillet, heat 1 tablespoon of olive oil over medium heat. Add the diced onion and minced garlic. Sauté for 2-3 minutes until the onion becomes translucent.

Sauté Mushrooms: Add the sliced mushrooms to the skillet. Sauté for 5-7 minutes until the mushrooms release their moisture and become golden brown. Sprinkle dried thyme, salt, and pepper over the mushrooms and stir well.

Assembling the Casserole: Combine Squash and Mushroom Mixture: In a large mixing bowl, combine the roasted spaghetti squash strands with the sautéed mushroom and onion mixture. Mix well to distribute the flavors.

Add Cheese: Stir in the shredded Gruyère cheese (or your chosen melting cheese) until it’s evenly distributed throughout the mixture.

Baking the Casserole: Grease and Layer: Grease a 9×13-inch baking dish. Transfer the squash and mushroom mixture into the dish, spreading it out evenly.

Bake to Perfection: Place the casserole in the preheated oven and bake for 20-25 minutes, or until it’s heated through, and the cheese is bubbly and slightly golden on top.

Garnish and Serve: Fresh Parsley Garnish: Remove the casserole from the oven and let it cool slightly. If desired, garnish with fresh parsley leaves for a burst of color and freshness.

Enjoy Your Spaghetti Squash and Mushroom Casserole: Serving Time: Serve generous portions of the casserole onto plates or into bowls.

Savor the Earthy Delight: Grab a fork and savor the comforting combination of roasted spaghetti squash, sautéed mushrooms, and melted cheese. It’s an earthy delight!

Pro Tip: Drizzle a bit of truffle oil over the casserole for a luxurious touch of flavor.Now you have a flavorful recipe for Spaghetti Squash and Mushroom Casserole that’s perfect for those seeking a hearty and nutritious meal. Enjoy!

Instructions

Preheat your oven to 375°F (190°C).

Cut the spaghetti squash in half lengthwise and remove the seeds.

Place the squash halves cut side down on a baking sheet and roast for 40-50 minutes or until the squash is tender and can be easily shredded with a fork.

Scrape the flesh of the squash with a fork to create “spaghetti” strands.

In a large skillet, melt the butter over medium heat. Add the sliced mushrooms and cook until they release their moisture and turn golden brown.

Add the diced onions and bell peppers to the skillet and cook until they soften.

In a saucepan, heat the heavy cream over low heat and stir in the grated Parmesan cheese until the sauce is smooth. Season with salt and pepper.

In a large mixing bowl, combine the spaghetti squash strands, sautéed mushrooms, onions, bell peppers, and the creamy sauce.

Transfer the mixture to a casserole dish.

Bake for 20-25 minutes or until the casserole is heated through.

Garnish with fresh thyme leaves before serving.

This spaghetti squash and mushroom casserole offers a delightful combination of sweet squash and savory mushrooms.

Conclusion

Spaghetti squash casseroles are a game-changer for anyone looking to enjoy the comforting flavors of casseroles while maintaining a healthy lifestyle. From classic renditions to vegan options and Mediterranean-inspired creations, these recipes showcase the incredible versatility of spaghetti squash as a pasta substitute. Whether you’re reducing carbs or simply looking to incorporate more vegetables into your diet, these spaghetti squash casserole recipes are sure to satisfy your taste buds and keep you coming back for more. So, grab a fork and get ready to indulge in the wholesome goodness of spaghetti squash casseroles that redefine comfort food in the healthiest way possible.

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