Baked Ziti

Baked Ziti

1 lb ziti pasta
1 onion, chopped
1 green bell pepper, chopped
1 lb lean ground beef
2 jars spaghetti sauce (I liked Hunts)
1 cup provolone cheese, sliced
1 1/2 cups sour cream
1 cup mozzarella cheese, shredded
2 tablespoons grated Parmesan cheese

Cook ziti pasta, until al dente, about 8 minutes; drain. In a large skillet, brown onion and ground beef and pepper, over medium heat. Add spaghetti sauce, and simmer 15 minutes.
Preheat the oven to 350 degrees. Butter a 9x13 inch baking dish. Layer as follows: 1/2 of the ziti, Provolone cheese, sour cream, 1/2 sauce mixture, remaining ziti, mozzarella cheese and remaining sauce mixture. Top with grated Parmesan cheese. Bake for 30 minutes in the preheated oven, or until cheeses are melted.