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Spaghetti Squash Casserole

Quick & Simple Meals
This Spaghetti Squash Casserole is a hearty, wholesome dish that swaps pasta for roasted squash but keeps all the comfort. It's layered with lean ground beef, flavorful marinara, Italian herbs, and melty mozzarella—then baked until bubbly and golden. A low-carb dinner that’s satisfying enough for any night of the week!
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Prep Time 15 minutes
Cook Time 55 minutes
Total Time 1 hour 10 minutes
Servings 4
Calories 330 kcal

Ingredients
  

  • 1 medium spaghetti squash cooked
  • 1 lb lean ground beef
  • 1 small onion diced
  • 2 cloves garlic minced
  • 1 can 15 oz diced tomatoes
  • 1 tbsp tomato paste
  • 1 cup marinara or pasta sauce
  • 1 tsp Italian seasoning
  • 1 ½ cups shredded mozzarella cheese

Instructions
 

  • Roast spaghetti squash at 400°F until tender, about 35–40 minutes.
  • Let cool and scrape into strands.
  • Preheat oven to 375°F.
  • In a skillet, cook ground beef, onion, and garlic until no pink remains. Drain excess fat.
  • Stir in diced tomatoes, tomato paste, marinara sauce, and Italian seasoning.
  • Simmer 5 minutes.
  • See full steps with tips & photos → https://mischacrossing.com/spaghetti-squash-casserole/

Notes

• You can prep the squash up to 2 days ahead to save time.
• Use your favorite pasta sauce or homemade marinara for extra flavor.
• Add chopped spinach or mushrooms for a veggie boost.