In A Large Bowl, Combine The Beef, Bread, Egg, Mustard And Worcestershire Sauce And Mix Well. Form Into 6 To 8 Patties And Season With Garlic Salt And Salt And Pepper To Taste. In A Large Skillet Over Medium Heat, Saute The Patties For 10 To 15 Minutes, Or Until Fully Cooked To Desired Doneness.