Rita Bliss

1 16-ounce can kidney beans, rinsed and drained
1 15 1/2-ounce can great northern beans, rinsed and drained
1 15-ounce pork and beans. Do not drain these.
1/2 cup barbecue sauce
2 tablespoons brown sugar
2 teaspoons mustard

Combine all ingredients, place in casserole and top with bacon (if desired). Bake at 400 degrees for approximately 30 minutes or until heated through.