Million Dollar Spaghetti Casserole Recipe

Ingredients
Meat Sauce
1 pound ground beef
1 pound Italian sausage
1 medium onion, finely chopped
3 cloves garlic, minced
1 jar (24 oz) marinara sauce
1 teaspoon Italian seasoning
1/2 teaspoon salt
1/4 teaspoon black pepper
Creamy Cheese Filling
1 (8 oz) package cream cheese, softened
1 cup ricotta cheese
1 cup sour cream
1 cup shredded mozzarella cheese
1/2 cup grated Parmesan cheese
Pasta
1 pound spaghetti
2 tablespoons unsalted butter (for greasing the baking dish and pasta)
Topping
2 cups shredded mozzarella cheese
1/4 cup grated Parmesan cheese
Instructions