Easy Baked Beans

½ lb bacon, chopped
½ lb hamburger
1 medium onion, diced
1-15 oz can pork & beans
1-15 oz can garbanzo beans
1-15 oz can lima beans
1 Tbsp molasses
¼ cup brown sugar
¼ cup ketchup
½ tsp dry mustard
½ tsp vinegar
*Fry bacon until crispy. Drain on paper towel, reserving 1 Tbsp grease. Fry onion in reserved bacon grease until golden brown. Brown hamburger. Add salt and pepper. Combine remaining ingredients in covered casserole. Bake at 350˚ for one hour.