This recipe has more than 3 kind of beans in it, but it is good:
Calico Bean Recipe
INGREDIENTS:
* 8 ounces bacon, about 10 to 12 slices
* 1 pound lean ground beef
* 1 cup chopped onion
* 1/2 cup brown sugar
* 1 tbsp. dry mustard
* 2 cans pork and beans
* 1 can lima beans or butter beans, drained
* 1 can kidney beans, drained
* 1/2 cup ketchup
* 1 tsp. salt
* 1 tbsp. vinegar
PREPARATION:
Brown bacon, ground beef, and chopped onions. Combine drained ground beef mixture in slow cooker with remaining ingredients; cover and cook on LOW for 3 to 5 hours.