Calico Bean Bake

1/2 pound hamburger
1/2 pound bacon, chopped
1 cup onion, chopped
1/2 cup ketchup
3/4 cup brown sugar
2 tsp vinegar
1 can lima beans, drained
2 cans pork and beans
1 can kidney beans, drained
1 tsp salt
1 tsp dry mustard

Brown hamburger, bacon and onion. Pour into 3 quart casserole. Add remaining ingredients and mix well. Bake at 350F for 40 minutes.