Baked Ziti

Finely chop the onion, preheat the oven to 350°F (175°C), and boil the ziti in salted water until al dente, then drain

Brown the ground beef and onion in a large skillet over medium-high heat, then stir in the spaghetti sauce and simmer for 15 minutes

Layer half of the cooked ziti in a baking dish, then top with provolone slices, sour cream, and half of the meat sauce

Add the remaining ziti, top with mozzarella and the rest of the meat sauce, then sprinkle with parmesan cheese

Bake in the preheated oven for 30 minutes until the cheese is melted and the sauce is bubbly