Here is a basic calico beans recipe. I usually add more beans to it to make a crockpot full. Adjust the ketchup and brown sugar and other ingredients to your liking.
1 ½ lbs. Hamburger, drained
1 lb. Bacon, cut up and browned
1 c. chopped onion
1 can pork and beans
1 can kidney beans
1 can baby butter beans, drained
1 c. brown sugar
¾ c. catsup
2 tsp. vinegar
1 T. mustard
Combine all ingredients and cook on a low setting for several hours.