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Cheesy Spaghetti Squash Casserole: An Amazing Ultimate Recipe

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Cheesy Spaghetti Squash Casserole is a cozy, low-carb comfort dish made with tender spaghetti squash, three kinds of cheese, and savory seasonings. It’s a wholesome and indulgent meal that’s perfect for weeknights or gatherings.

  • Total Time: 1 hour 5 minutes
  • Yield: 6–8 servings

Ingredients

  • 1 medium spaghetti squash
  • 2 cups shredded mozzarella cheese
  • 1 cup ricotta cheese
  • 1 cup grated Parmesan cheese
  • 1 large egg
  • 2 cloves garlic, minced
  • 1 teaspoon Italian seasoning
  • ½ teaspoon salt
  • ¼ teaspoon black pepper
  • 1 cup marinara sauce (optional, for layering)
  • Fresh parsley, for garnish (optional)
  • Olive oil, for drizzling

Instructions

  1. Preheat oven to 400°F (200°C).
  2. Cut the spaghetti squash in half lengthwise, remove seeds, drizzle with olive oil, and season with salt and pepper.
  3. Place halves cut-side down on a baking sheet and roast for 30–35 minutes until tender.
  4. Let squash cool slightly, then scrape strands into a large bowl.
  5. Add mozzarella, ricotta, Parmesan, egg, garlic, Italian seasoning, salt, and pepper. Mix well.
  6. Spread a thin layer of marinara sauce (if using) on the bottom of a greased casserole dish.
  7. Transfer the squash mixture into the dish and spread evenly.
  8. Top with additional mozzarella and Parmesan cheese.
  9. Bake for 15–20 minutes, until cheese is melted and bubbly.
  10. Let cool slightly before garnishing with parsley and serving.

Notes

  • Use pesto instead of marinara for an Italian twist.
  • Mix in veggies like spinach or mushrooms for added nutrition.
  • Add cooked meat for a heartier version.
  • Make ahead and refrigerate before final baking step.
  • Freezes well in individual portions for easy reheating.
  • Author: Amelia
  • Prep Time: 15 minutes
  • Cook Time: 50 minutes
  • Category: Main Dish
  • Method: Baking
  • Cuisine: American
  • Diet: Gluten Free

Nutrition

  • Serving Size: 1/8 of casserole
  • Calories: 320
  • Sugar: 5g
  • Sodium: 540mg
  • Fat: 22g
  • Saturated Fat: 11g
  • Unsaturated Fat: 9g
  • Trans Fat: 0g
  • Carbohydrates: 10g
  • Fiber: 2g
  • Protein: 18g
  • Cholesterol: 70mg