3 c. onion, chopped
1 lb. ground beef
1 tsp. salt
1/2 c. ketchup
1/2 c. brown sugar
2 tbsp. mustard
1 tbsp. vinegar
2 (16 oz.) can pork and beans
1 (16 oz.) can kidney beans

Brown ground beef and onions; drain. Combine all ingredients in crock pot and simmer for 30 - 45 minutes.