Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/3  cup           catsup
   2      tablespoons   vinegar
   2      tablespoons   finely chopped onion
   1                    finely chopped garlic clove
   1 1/2  teaspoons     worcestershire sauce
   1      teaspoon      packed brown sugar
     1/8  teaspoon      dry mustard
   1      dash          pepper
   2      cups          cut-up cooked beef
   4                    french rolls -- split
   4      slices        american cheese

Preparation:

Mix all ingredients except beef, rolls and cheese in 1-Qt casserole. Cover and microwave on high (100%) util hot and bubbly, 2 to 3 minutes; stir. Mix beef into sauce. Cover and microwave until beef is hot, 3 to 5 minutes Fill rolls with beef mixture and cheese slices and serve.