1 lb. ground lean beef

(Form into 10-12 very thin 6-7 inch patties and set aside.) 1 med. onion (sweet) (sliced very thin) 2 med. tomatoes (sliced very thin) 5-6 slices cheese (your choice)

On one half of the burger patty place 2 pepperoni slices, 1 tomato slice, 1 cheese slice, onion pieces. Cover with another burger patty. Seal edges. Cook on grill very slowly for a long time until cooked through. Serve on big hamburger buns.