HAMBURGER BEAN BAKE

1 lb. hamburger
8 slices bacon, chopped (optional)
1 medium onion, chopped
1 (16 oz.) can pork and beans, undrained
1 (16 oz.) can kidney beans, drained
1 (16 oz.) can butter beans, drained
3/4 cup brown sugar
1/2 cup catsup
1/4 cup white sugar
2 tsp. mustard
1 tsp. vinegar
1 tsp. salt
1 tsp. pepper

Brown hamburger, bacon, and onion together; drain.

Add remaining ingredients.

Bake at 350 degrees for 1 hour.