Baked Ziti II

Ingredients:

1 pound dry ziti pasta 

1 onion, chopped

1 pound lean ground beef 

2 (26 ounce) jars spaghetti sauce 

6 ounces provolone cheese, sliced 1 

1/2 cups sour cream 

6 ounces mozzarella cheese, shredded 

2 tablespoons grated Parmesan cheese

Directions:

1-Bring a large pot of lightly salted water to a boil. Add ziti pasta, and cook until al dente, about 8 minutes; drain.

2-In a large skillet, brown onion and ground beef over medium heat. Add spaghetti sauce, and simmer 15 minutes.

3-Preheat the oven to 350 degrees F (175 degrees C). 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.

4-Bake for 30 minutes in the preheated oven, or until cheeses are melted.