Preheat your oven to 375° Fahrenheit.

While the pasta is cooking, brown the ground beef in a large skillet over medium heat. Cook until it's no longer pink, then drain any excess fat.

Mix the marinara sauce with the cooked ground beef. Let it simmer for about 5 minutes.

In a large baking dish, layer half of the cooked spaghetti, then top it with half of the marinara and beef mixture.

Pour half of the Alfredo sauce evenly over the marinara layer.

Sprinkle half of the shredded mozzarella cheese and half of the grated Parmesan cheese over the top of the Alfredo sauce.

Repeat the layers with the remaining spaghetti, marinara-beef mixture, Alfredo sauce, and cheeses.

Bake the dish in the preheated oven for about 20-25 minutes, or until the cheese on top is melted and golden.