1 1/2 lb. hamburger meat
3/4 c. bread crumbs
2 cans tomato sauce
1 egg, slightly beaten
1/4 c. onion, chopped
Salt and pepper
6 slices cheese

Preheat oven to 350 degrees. Mix meat, bread crumbs, 1 can tomato sauce, egg, onion, salt, and pepper. Pat out half of mixture into a loaf pan; lay cheese down on top of meat, then pat remaining meat on top of that. Be sure to press edges of meat so that cheese won't melt over and run in bottom of pan. Bake for about an hour or 1 1/2 hours.