Cheesy Spaghetti Squash Casserole is a comforting, lighter bake that layers squash, pasta, and three kinds of cheese.
- Cheesy Spaghetti Squash Casserole introduction
- Why make Cheesy Spaghetti Squash Casserole
- How to make Cheesy Spaghetti Squash Casserole
- Ingredients for Cheesy Spaghetti Squash Casserole
- Directions for Cheesy Spaghetti Squash Casserole
- How to serve Cheesy Spaghetti Squash Casserole
- How to store Cheesy Spaghetti Squash Casserole
- Tips to make Cheesy Spaghetti Squash Casserole
- Variation (if any) for Cheesy Spaghetti Squash Casserole
- FAQs about Cheesy Spaghetti Squash Casserole
Cheesy Spaghetti Squash Casserole introduction
Cheesy Spaghetti Squash Casserole brings good texture and cheesy flavor without being heavy.
If you enjoy easy baked vegetable dishes, try the similar cheesy baked vegetable casserole recipe for another simple weeknight option.
Why make Cheesy Spaghetti Squash Casserole
Cheesy Spaghetti Squash Casserole is a great mix of vegetables and comfort food in one dish.
It cuts calories compared to a full pasta bake but keeps the cheesy, satisfying feel you want.
How to make Cheesy Spaghetti Squash Casserole
Cheesy Spaghetti Squash Casserole is simple to assemble and bake in about an hour.
Work in steps: roast, mix, top, and bake for a bubbly finish.
For a crunchy twist on cheesy bakes, you can look at a different take like cheesy broccoli pretzel casserole.
Ingredients for Cheesy Spaghetti Squash Casserole
- 1 spaghetti squash
- 2 cups cooked spaghetti or pasta
- 1 cup ricotta cheese
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 2 cups marinara sauce
- 1 egg
- 1 teaspoon garlic powder
- 1 teaspoon Italian seasoning
- Salt and pepper to taste
- Fresh basil for garnish
Directions for Cheesy Spaghetti Squash Casserole
- Preheat the oven to 375°F (190°C).
- Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place cut side down on a baking sheet and roast for 30–40 minutes until tender.
- In a large bowl, mix together the ricotta cheese, egg, garlic powder, Italian seasoning, salt, and pepper.
- Once the squash is cooked, scrape the insides with a fork to create spaghetti-like strands.
- Combine the spaghetti squash strands with cooked spaghetti or pasta and mix in the marinara sauce.
- Add the ricotta mixture to the pasta and squash, stirring to combine.
- Transfer the mixture to a greased baking dish and top with mozzarella and Parmesan cheese.
- Bake for 25–30 minutes until the cheese is bubbly and golden.
- Garnish with fresh basil before serving.
How to serve Cheesy Spaghetti Squash Casserole
Cheesy Spaghetti Squash Casserole is best served hot and fresh from the oven.
Serve with a side salad or steamed greens for a balanced plate.
How to store Cheesy Spaghetti Squash Casserole
Store leftovers in an airtight container in the fridge for up to 3–4 days.
Reheat individual portions in the microwave or warm the whole dish in a 350°F oven until heated through.
Tips to make Cheesy Spaghetti Squash Casserole
- Use firm, evenly shaped squash so it cooks evenly.
- Drain extra sauce if you prefer a less saucy bake.
- Swap half the mozzarella for provolone for a different melt.
For more recipe ideas with vegetables, try the Asian-inspired eggplant casserole as another tasty option.
Variation (if any) for Cheesy Spaghetti Squash Casserole
- Add cooked ground turkey or Italian sausage for a meatier bake.
- Mix in spinach or mushrooms for extra veggies.
- Use gluten-free pasta to keep it gluten-free while keeping the texture.
FAQs about Cheesy Spaghetti Squash Casserole
Q: Can I make Cheesy Spaghetti Squash Casserole ahead of time?
A: Yes. Assemble and refrigerate up to a day before baking. Bake as directed when ready.
Q: Can I use only spaghetti squash and skip the pasta?
A: Yes. Use extra squash strands instead of pasta for a lower-carb version.
Q: Where can I buy spaghetti squash tools or a good baking dish?
A: Buy it here for helpful kitchen items and bakeware.

Cheesy Spaghetti Squash Casserole
Ingredients
Main Ingredients
- 1 whole spaghetti squash Use firm, evenly shaped squash for even cooking.
- 2 cups cooked spaghetti or pasta Swap with gluten-free pasta for a gluten-free option.
- 1 cup ricotta cheese
- 1 cup shredded mozzarella cheese Can swap half for provolone for a different flavor.
- 1/2 cup grated Parmesan cheese
- 2 cups marinara sauce Drain extra sauce if a less saucy bake is preferred.
- 1 whole egg
- 1 teaspoon garlic powder
- 1 teaspoon Italian seasoning
- to taste Salt and pepper
- fresh basil for garnish Adds a fresh touch before serving.
Instructions
Preparation
- Preheat the oven to 375°F (190°C).
- Cut the spaghetti squash in half lengthwise and scoop out the seeds. Place cut side down on a baking sheet and roast for 30-40 minutes until tender.
Mixing
- In a large bowl, mix together the ricotta cheese, egg, garlic powder, Italian seasoning, salt, and pepper.
- Once the squash is cooked, scrape the insides with a fork to create spaghetti-like strands.
- Combine the spaghetti squash strands with cooked spaghetti or pasta and mix in the marinara sauce.
- Add the ricotta mixture to the pasta and squash, stirring to combine.
Baking
- Transfer the mixture to a greased baking dish and top with mozzarella and Parmesan cheese.
- Bake for 25-30 minutes until the cheese is bubbly and golden.
- Garnish with fresh basil before serving.

