Can I make Spaghetti Squash Casserole ahead of time?

Yes, Spaghetti Squash Casserole is ideal for meal prep. You can fully assemble the casserole and store it in the refrigerator for up to 24 hours before baking. When you're ready to cook, simply place it in the oven and bake until hot and bubbly. This makes it a convenient option for busy schedules.

How do I prevent my Spaghetti Squash Casserole from being watery?

To avoid excess moisture, make sure the spaghetti squash is fully roasted and not undercooked. After roasting, you can lightly pat the strands with paper towels to remove excess water. Also, use a thicker marinara sauce to help maintain the right texture in your Spaghetti Squash Casserole.

Can I freeze Spaghetti Squash Casserole?

Yes, this casserole freezes well. Assemble the dish without baking, wrap it tightly, and freeze for up to two months. When ready to use, thaw it overnight in the refrigerator and bake as directed. Freezing makes Spaghetti Squash Casserole a great option for long-term meal planning.

What proteins can I add to Spaghetti Squash Casserole?

You can easily add protein to your Spaghetti Squash Casserole to make it more filling. Popular options include cooked ground beef, turkey, chicken, or Italian sausage. For a vegetarian version, try adding lentils or chickpeas. These additions blend well with the flavors of the dish while enhancing its nutritional value.

Spaghetti Squash Casserole Easy Recipe

Name: Spaghetti Squash Casserole
Prep time: 15 min
Cook time: 1 h
Total time: 1 h 15 min
Cuisine: Italian-American
Ingredients: 1 large spaghetti squash (about 3 pounds); 2 tablespoons olive oil (divided); 1 small onion, finely chopped (about 1/2 cup); 2 cloves garlic, minced; 1 cup sugar-free marinara sauce; 1 teaspoon Italian seasoning; 1 cup shredded mozzarella cheese; 1/2 cup grated Parmesan cheese; 1/2 teaspoon salt; 1/4 teaspoon black pepper; 2 tablespoons fresh basil, chopped (optional, for garnish)

Description

Spaghetti Squash Casserole is a healthy, cheesy, and comforting baked dish made with tender roasted spaghetti squash strands, rich marinara sauce, Italian herbs, and melted mozzarella and Parmesan cheese. This low-carb, gluten-free alternative to traditional pasta casseroles is perfect for an easy family dinner or meal prep.

Ingredients

Scale

1 large spaghetti squash (about 3 pounds)
2 tablespoons olive oil (divided)
1 small onion, finely chopped (about 1/2 cup)
2 cloves garlic, minced
1 cup sugar-free marinara sauce
1 teaspoon Italian seasoning
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
1/2 teaspoon salt
1/4 teaspoon black pepper
2 tablespoons fresh basil, chopped (optional, for garnish)

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Instructions

Preheat the oven to 400°F (200°C). Line a baking sheet with parchment paper.
Cut the spaghetti squash in half lengthwise and scoop out the seeds. Drizzle the inside with 1 tablespoon olive oil and season with 1/4 teaspoon salt and 1/8 teaspoon black pepper.
Place the squash halves cut side down on the prepared baking sheet and roast for 30 to 40 minutes, or until the flesh is tender and easily shredded with a fork.
While the squash roasts, heat the remaining 1 tablespoon olive oil in a large skillet over medium heat. Add the chopped onion and cook for about 5 minutes until softened.
Add the minced garlic and cook for 1 minute until fragrant.
Stir in the marinara sauce and Italian seasoning. Simmer for 5 to 7 minutes, allowing the flavors to blend.
Remove the roasted squash from the oven and let it cool slightly. Use a fork to scrape the flesh into spaghetti-like strands.
Add the squash strands to the skillet with the sauce and toss until evenly coated.
Transfer the mixture to a greased 9×13-inch baking dish and spread evenly.
Top with shredded mozzarella cheese and grated Parmesan cheese.
Bake for 15 to 20 minutes, or until the cheese is melted and bubbly. For a golden top, broil for 2 to 3 minutes if desired.
Garnish with chopped fresh basil before serving.

Notes

Pat the cooked spaghetti squash strands with paper towels if excess moisture is present to prevent a watery casserole.
Use a thick marinara sauce for best texture and flavor.
Add cooked ground turkey, chicken, or Italian sausage for extra protein.
Store leftovers in an airtight container in the refrigerator for up to 3 days.
Freeze unbaked casserole for up to 2 months; thaw overnight before baking.

Prep Time: 15 minutes
Cook Time: 60 minutes
Category: Dinner
Method: Baking
Cuisine: Italian-American

Nutrition

Serving Size: 1 serving
Calories: 210 kcal
Sugar: 6 g
Sodium: 420 mg
Fat: 14 g
Saturated Fat: 6 g
Unsaturated Fat: 7 g
Trans Fat: 0 g
Carbohydrates: 16 g
Fiber: 3 g
Protein: 9 g
Cholesterol: 25 mg