1 lb. ground beef
1 c. chopped onions
2 cans pork and beans, undrained
1 can kidney beans, drained
1 can butter beans, drained
1 c. ketchup
1/4 c. brown sugar
1 tbsp. liquid smoke
3 tbsp. vinegar
1 tsp. salt

Heat crock pot. Brown ground meat. Add remaining ingredients. Stir well. Cook in crock pot on low for 5 to 6 hours.