1 can (16 oz.) green beans, drained
1 can (16 oz.) waxed beans, drained
1 can (16 oz.) kidney beans, drained
1 med. red or sweet white onion, sliced thin
3 tbsp. sugar or sweeten to taste
1/4 c. vinegar

Mix first three ingredients, then layer onion in. Mix sugar and vinegar together and pour over salad. Refrigerate overnight.