1/2 lb. boiled or baked ham
1/2 lb. sharp process cheese
1 (2 3/4 oz.) bottle green stuffed olives
1 sm. onion
1/2 c. catsup
12 hamburger buns

Grind ham, cheese, olives and onion. Stir in catsup. Spread between buns. Wrap each in foil. Refrigerate until 20 minutes before serving time. Heat in 300 degree (slow) oven until cheese melts, about 20 minutes.

NOTE: May be wrapped in plastic wrap and heated in microwave oven. Yield: 12 servings.