Baked Ziti

This is a layered pasta casserole.  

Baked Ziti

Ingredients
1 pound dry ziti pasta
1 onion, chopped
1 lb. ground beef
2 26-oz. jars spaghetti sauce
6 oz. provolone cheese, sliced
1 1/2 cups sour cream
6 oz. mozzarella cheese, shredded
2 Tbls. grated parmesan cheese

Directions
Boil the pasta according to package directions, about 8 minutes or until al dente.  Drain.

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

Preheat oven to 350 degrees.  Butter a 9 x 13 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 or until cheeses are melted.  Allow to stand for 15 minutes before serving.

Serves 8-12
Freezes well