Diner Meat Loaf

1 1/2 lb Ground beef

1 c Soft bread crumbs

3/4 c Milk

1/2 c Chopped onions

1/2 c Parmesan cheese

1 Egg, slightly beaten

1 1/2 ts Salt

1/4 ts Pepper

1/4 ts Oregano

1 sm Can tomato sauce

3 Slices Mozzarella cheese

Heat oven to 350 degrees.Combine all ingredients except tomato sauce and Mozzarella cheese.Mix lightly.In a 10 x 6" loaf pan, shape loaf.Bake 1 1/2 to 2 hours.Drain excess fat.Pour tomato sauce over loaf during last 1/2 hour of baking time.Place Mozzarella cheese on top.Bake 5 to 10 minutes.Serves 4 to 6.