Cheeseburger Appetizer - cooking recipe

Ingredients

1 lb. lean ground beef
1/2 c. or 8 oz. Cheddar cheese
2 tsp. mustard
1 small onion, chopped fine
salt and pepper
2 tsp. ketchup

Preparation

Mix all together.
Plump on Pepperidge Farm mini rolls, open-faced.
Bake at 250\u00b0 for 1/2 hour.
Freezes well.