Easy Spaghetti Squash Casserole Recipe

This unbelievably easy spaghetti squash casserole is a low-carb and gluten-free dream come true! Packed with savory ground beef, Italian sausage, and melted cheese, this comforting dish is perfect for a weeknight dinner or a special occasion. Get ready for a flavor explosion that's both healthy and delicious!

Prep Time 30 mins
Cook Time 110 mins
Calories 294.4 kcal
Protein 27g
Rating Be the first
Easy Spaghetti Squash Casserole 43

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Forktionary editorial kitchen team

The Forktionary Kitchen Team

Adapted from Food.com, then tested & standardized by Forktionary.

Ingredients for Easy Spaghetti Squash Casserole

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How to Make Easy Spaghetti Squash Casserole

  1. Preheat oven to 350°F (175°C).
  2. Cut one medium spaghetti squash in half lengthwise.
  3. Scoop out seeds and stringy pulp from the center of each squash half.
  4. Place squash halves cut-side down in a baking pan. Pour 2 cups of water into the pan.
  5. Cover the pan tightly with foil.
  6. Bake for 50-60 minutes, or until a fork easily pierces the squash. Baking time will depend on the size of your squash.
  7. Once cooked, use a fork to scrape the spaghetti-like squash strands into a large bowl. Drain well to remove excess liquid.
  8. While the squash is baking, brown 1 lb ground beef and 1 lb Italian sausage in a large skillet over medium-high heat. Drain off any excess grease and set aside.
  9. About halfway through the squash baking time, dice 1 medium onion and 8 oz cremini mushrooms.
  10. Sauté the diced onion in 2 tablespoons of butter or olive oil until softened and lightly browned. Add the mushrooms and cook until tender.
  11. Stir in 24 oz (2 jars) of your favorite spaghetti sauce or fire-roasted diced tomatoes. Heat through and remove from heat.
  12. In a large bowl, combine the cooked spaghetti squash, browned meat, sautéed vegetables, and 1 cup of grated Parmesan cheese.
  13. Transfer the mixture to a greased 9x13 inch baking dish.
  14. Top with 1 cup of shredded mozzarella cheese.
  15. Bake for 30-40 minutes, or until the cheese is melted, bubbly, and lightly browned.
  16. Remove from oven and let cool slightly before serving.
  17. Serve with a dollop of sour cream or plain Greek yogurt, if desired.

Nutrition Information (Approximate per serving)

Sodium

30 g

Sugar

22g

Fat

55g

Carbs

4g

Frequently Asked Questions

How long does it take to make Easy Spaghetti Squash Casserole?

Easy Spaghetti Squash Casserole takes about 140 minutes from start to finish — roughly 30 minutes to prepare and 110 minutes to cook.

How many calories are in Easy Spaghetti Squash Casserole?

Easy Spaghetti Squash Casserole has approximately 294.4 calories per serving, with about 27 g protein, 4 g carbohydrates and 32 g fat.

What ingredients do I need for Easy Spaghetti Squash Casserole?

The key ingredients for Easy Spaghetti Squash Casserole are Spaghetti Squash, Spaghetti Sauce, Parmesan Cheese, Mushroom, Sweet Onion, Ground Beef. See the full list with measurements above.

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