The Best Spaghetti Casserole Recipe

Prep Time::20 mins

Cook Time::40 mins

Total Time:: 1 hr

Servings::12

Ingredients

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Original recipe (1X) yields 12 servings

cooking spray

12 ounces uncooked spaghetti

1 (8 ounce) package cream cheese, softened

1 (8 ounce) container sour cream

2 cups shredded part-skim mozzarella cheese, divided

2 tablespoons olive oil

1 ½ pounds ground sirloin

½ cup chopped yellow onion

2 teaspoons finely chopped garlic

2 teaspoons Italian seasoning

1 teaspoon kosher salt

½ teaspoon ground black pepper

2 (24 ounce) jars spaghetti or marinara sauce

¼ cup Parmesan cheese

Directions

Gather all ingredients. Preheat the oven to 350 degrees F (175 degrees C). Spray a 9×13-inch baking dish with cooking spray; set aside.

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Boil spaghetti in generously salted water until cooked through but still firm to the bite, 8 to 10 minutes. Drain and set aside.

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While pasta cooks, stir cream cheese, sour cream, and 1 cup of mozzarella cheese together until combined; set aside.

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Heat olive oil in a large high-sided skillet over medium-high heat. Add beef in large chunks and cook, undisturbed, until lightly browned, about 2 minutes.

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Add onion, garlic, Italian seasoning, salt, and pepper. Continue to cook, breaking up meat into smaller pieces with a wooden spoon and stirring occasionally, until almost cooked through, about 3 minutes. Remove from heat and tilt the pan to pool grease onto one side, trying to keep the beef mixture on the other. Use a large spoon to remove grease; discard grease once cooled.

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Add marinara to beef mixture in skillet; stir until combined. Add reserved spaghetti. Fold and stir until well coated in sauce.

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Transfer ½ of the pasta mixture to prepared baking dish. Spread sour cream mixture evenly over pasta mixture in baking dish, then top with remaining pasta mixture.

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Sprinkle remaining 1 cup mozzarella evenly over spaghetti mixture. Cover loosely with aluminum foil and place baking dish on a baking sheet. 

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Bake in preheated oven until cheese has melted, about 30 minutes. Remove aluminum foil and sprinkle top with Parmesan cheese. Increase oven temperature to broil. 

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Broil until cheese has started to turn golden brown, 3 to 4 minutes. Sprinkle with parsley and serve.

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Enjoy!

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From the Editor

This recipe was tested in the Allrecipes test kitchen and updated to include cream cheese, garlic, and additional seasonings based on user feedback.

By skill

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