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Overhead view of spaghetti squash in a baking dish next to a plate with a serving on it.
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Million Dollar Spaghetti Squash Casserole

Spaghetti squash casserole with a creamy cheesy filling! 
Course Main Course
Cuisine American
Keyword casserole, keto, low carb
Prep Time 20 minutes
Cook Time 1 hour 20 minutes
Total Time 1 hour 40 minutes
Servings 6
Calories 413kcal

Ingredients

  • 1 spaghetti squash 2-3 pounds
  • 1 tablespoon olive oil
  • 1 teaspoon salt
  • 1 pound ground beef
  • 24 ounces marinara store bought or homemade
  • 8 ounces cream cheese
  • ½ cup sour cream
  • 1 tablespoon chopped parsley
  • 2 cups shredded mozzarella

Instructions

For the squash:

  • Preheat oven to 400 degrees. Spray a rimmed baking sheet with non-stick spray.
  • Cut the spaghetti squash in half length-wise. Scoop out the seeds and discard. Drizzle the inside of the squash with olive oil and sprinkle with salt.
  • Place spaghetti squash flesh side down on the prepared baking sheet at bake for 1 hour or until fork tender.
  • Use a fork to scrape out long strands of squash, scraping across the width of the squash.

For the meat sauce:

  • Brown the ground beef over medium heat in a large skillet.
  • Drain the grease and add the marinara to the pan. Cook for 5 minutes over low heat to heat through.

For the cream cheese mixture:

  • Add the cream cheese, sour cream, and parsley to a small mixing bowl and stir well to combine.

To assemble:

  • Preheat oven to 350 degrees. Spray a 9x13 baking dish with non-stick spray.
  • Place half of the spaghetti squash in the prepared baking dish.
  • Top the squash with half of the meat sauce and all of the cream cheese mixture.
  • Add the remaining spaghetti squash followed by the remaining meat sauce.
  • Sprinkle on the grated mozzarella.
  • Bake for 20 minutes or until cheese is melted and casserole is hot.
  • Serve immediately.

Notes

Scrape the spaghetti squash length-wise for short strands of squash or width-wise for long strands of squash.
You can use any type of ground meat you prefer for the meat sauce. A mix of sausage and beef is delicious, too!

Nutrition

Calories: 413kcal | Carbohydrates: 10g | Protein: 21g | Fat: 35g | Fiber: 2g | Net Carbs: 8g