Baked Ziti

Baked Ziti
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Ingredients:1 lb. ziti pasta1 onion, chopped1 lb. Italian sausage2 24oz. jars spaghetti sauce (I prefer Prego Meat Sauce, it tends to be thicker)6 slices Provolone cheese1 1/2 cup sour cream2 cups Mozzarella cheeseParmesan cheese, to coverDirections:1. In a large skillet, brown Italian sausage with onion. Drain fat. Add spaghetti sauce to skillet and simmer for 15 minutes.2. While meat mixture is simmering, boil noodles until al dente. Drain.3. Layer as follows in a 9x13 pan:1/2 ziti noodles, Provolone cheese, sour cream, 1/2 meat sauce mixture, remaining ziti noodles, Mozzarella cheese, remaining meat sauce mixture, and cover with Parmesan cheese.4. Bake for 30 minutes at 350 degrees.