1 lb. ground beef, browned
2 (16 oz. ea.) cans pork and beans
1 (15 oz.) can red or kidney beans
1 env. onion soup mix (Lipton)
1 cup ketchup (Hunts)
1/2 cup cold water
1/4 cup maple syrup
1/3 cup brown sugar
2 tbsp. prepared mustard
1 tsp. vinegar

Mix all ingredients. Bake at 300°F for 30 minutes.