Hobo Beans

1 lb ground beef
2 cans baked beans
1 can kidney beans (drained)
1 can butter beans (drained)
2 teaspoons vinegar
2 teaspoons dry mustard
1 cup water
2 cups catsup
1 package onion soup mix
1/2 lb sliced pepperoni
1/2 cup brown sugar
2 tablespoons margarine

Combine ingredients in buttered dish.  Bake at 400 for 45 minutes.