Preheat oven to 350 degrees. ... 1/2 cups sour cream over that and top with 1/2 pound Provolone cheese. Repeat layers through sour ... cheese melts and browns.
Brown ground meat, onions, and ... half of sour cream on sauce, top with slices ... casserole with Mozzarella cheese. Bake covered for 35 ... 350 degrees. Serves 8.