The Best Spaghetti Casserole
The Best Spaghetti Casserole
Ingredients
- 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
- teaspoons finely chopped garlic
- teaspoons Italian seasoning
- 1 teaspoon kosher salt
- ½ teaspoon ground black pepper
- 24 ounce jar spaghetti or marinara sauce
- ¼ cup Parmesan cheese
Instructions
- 1
Gather all ingredients. Preheat the oven to 350°F (175°C). Spray a 9x13-inch baking dish with cooking spray; set aside.
- 2
Boil spaghetti in generously salted water until cooked through but still firm to the bite, 8 to 10 minutes. Drain and set aside.
- 3
While pasta cooks, stir cream cheese, sour cream, and 1 cup of mozzarella cheese together until combined; set aside.
- 4
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.
- 5
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.
- 6
Add marinara to beef mixture in skillet; stir until combined. Add reserved spaghetti. Fold and stir until well coated in sauce.
- 7
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.
- 8
Sprinkle remaining 1 cup mozzarella evenly over spaghetti mixture. Cover loosely with aluminum foil and place baking dish on a baking sheet.
- 9
Bake in preheated oven until cheese has melted, about 30 minutes.
30 min - 10
Remove aluminum foil and sprinkle top with Parmesan cheese. Increase oven temperature to broil.
0 - 11
Broil until cheese has started to turn golden brown, 3 to 4 minutes.
4 min - 12
Sprinkle with parsley and serve.
Nutrition
Per serving (based on 12 servings)

