Spaghetti Squash Casserole with Pasta Sauce

Yummy and light, but filling, way to get those veggies in. Spaghetti squash casserole topped with pasta sauce, it tastes just like pasta and super yummy!

Prep Time:
20 mins
Cook Time:
40 mins
Total Time:
1 hrs
1 8-inch casserole


  • 1 medium spaghetti squash

  • cooking spray

  • 1 tablespoon olive oil

  • ½ pound bulk Italian sausage

  • 1 medium zucchini, chopped

  • 1 medium red bell pepper, chopped

  • ½ medium onion, chopped

  • 1 clove garlic, minced

  • salt and ground black pepper to taste

  • 1 (28 ounce) jar pasta sauce

  • ½ cup shredded Parmesan cheese

  • ½ cup shredded mozzarella cheese


  1. Pierce squash a few times with a very sharp knife. Place squash in a microwave-safe bowl and microwave on high power until squash is tender and a knife can easily poke through the skin, 10 to 13 minutes. Let squash rest, undisturbed, for 10 minutes.

  2. Meanwhile, preheat the oven to 350 degrees F (175 degrees C). Spray an 8-inch casserole dish with cooking spray.

  3. Heat oil in a skillet over medium heat; stir in sausage, zucchini, bell pepper, onion, and garlic. Saute, stirring occasionally, until veggies are tender and sausage is crumbly and brown, 5 to 7 minutes.

  4. Cut open squash and remove and discard all seeds. Scrape out the flesh with a fork and add to the sausage and veggie mixture. Season with salt and pepper and cook over medium heat for 5 minutes. Stir in pasta sauce and transfer to the prepared casserole dish. Top with shredded Parmesan and mozzarella cheeses.

  5. Bake in the preheated oven until heated through and cheeses are melted, about 15 minutes.

Nutrition Facts (per serving)

490 Calories
26g Fat
46g Carbs
20g Protein
Nutrition Facts
Servings Per Recipe 4
Calories 490
% Daily Value *
Total Fat 26g 33%
Saturated Fat 9g 45%
Cholesterol 42mg 14%
Sodium 1568mg 68%
Total Carbohydrate 46g 17%
Dietary Fiber 7g 23%
Total Sugars 21g
Protein 20g
Vitamin C 55mg 276%
Calcium 341mg 26%
Iron 3mg 17%
Potassium 1163mg 25%

* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

** Nutrient information is not available for all ingredients. Amount is based on available nutrient data.

(-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.

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