Baked macaroni and 3 cheese

3/4 pound ziti pasta cooked
1 jar spaghetti sauce of your choice
1 cup sour cream
6 oz thinly sliced provolone cheese
6 oz shredded mozzerella cheese
1/2 c grated romano cheese

Preheat oven to 350
grease a 9x13 baking pan. In a lg bowl toss together pasta,spaghetti sauce,sour cream. Mix together all the cheeses in a bowl and set aside. layer half the pasta mixture in the baking dish sprinkle with half the cheese mixture. Layer remaining pasta and top with rest of cheese. bake for 3o mins. Dont let cheese brown