Spaghetti Squash Casserole in the Shell


I love almost any squash recipe, and this one makes a great meal all by itself! Quick, easy, and one of my favorite ways to make spaghetti squash!

Prep Time:
25 mins
Cook Time:
1 hr 19 mins
Additional Time:
7 mins
Total Time:
1 hr 51 mins
6 servings


  • 1 spaghetti squash, halved and seeded

  • 1 pound lean ground beef

  • ½ cup finely chopped onion

  • ½ cup minced bell pepper

  • 1 clove garlic, minced

  • 1 teaspoon dried basil

  • 1 teaspoon dried oregano

  • ½ teaspoon salt

  • ¼ teaspoon ground black pepper

  • 1 (14.5 ounce) can diced tomatoes, drained

  • cup shredded Cheddar cheese


  1. Preheat oven to 375 degrees F (190 degrees C). Place squash in baking pan; pour in enough boiling water to come 1/2-inch up the sides of dish.

  2. Bake in the preheated oven until squash is tender, 40 to 45 minutes. Remove from oven; cool until easily handled, 7 to 10 minutes.

  3. Reduce oven to 350 degrees F (175 degrees C). Scoop out squash; separate strands with a fork. Reserve shells.

  4. Cook beef, onion, and bell pepper in a skillet over medium heat until the meat is no longer pink, about 5 minutes; drain. Stir in garlic, basil, oregano, salt, and pepper; cook and stir until fragrant, about 2 minutes. Add tomatoes and cook until warmed through, about 2 minutes. Stir in squash; cook until liquid has evaporated, about 10 minutes.

  5. Fill squash shells with squash mixture using a slotted spoon; place in a shallow baking pan.

  6. Bake in the preheated oven until flavors combine, about 15 minutes. Sprinkle with Cheddar cheese; bake until cheese is melted, about 5 minutes.

Cook's Notes:

Any ground meat can be substituted for ground beef. You can substitute mozzarella cheese instead of Cheddar.

As a side dish this can serve 8 to 10, or it can be used as a main dish and serve 4 to 6.

Nutrition Facts (per serving)

236 Calories
13g Fat
13g Carbs
18g Protein
Nutrition Facts
Servings Per Recipe 6
Calories 236
% Daily Value *
Total Fat 13g 16%
Saturated Fat 5g 27%
Cholesterol 58mg 19%
Sodium 414mg 18%
Total Carbohydrate 13g 5%
Dietary Fiber 1g 4%
Total Sugars 3g
Protein 18g
Vitamin C 19mg 95%
Calcium 125mg 10%
Iron 4mg 19%
Potassium 452mg 10%

* 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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