Take a loaf of unsliced bread, cut off one end and then scoop out the middle, leaving about an inch inside all around. Take about 1 1/2 pounds hamburger or ground steak. Add canned tomatoes, onion, if desired, and brown in a skillet. Add some of the bread crumbs until you have a fairly thick consistency.
When browned, stuff bread shell, closing end with slice of bread fastened on with skewer or toothpicks. Using butter, butter the sides and top of the loaf and put in preheated oven at 350 degrees for about 15 minutes. Put on platter and slice to serve.