Aunt Arlene's Hamburger and Bean Casserole

3 strips bacon, diced and browned

2 pounds ground beef

1 cup chopped onion

2 (16 ounce) cans Bush's baked beans

1/4 cup molasses

1/2 cup ketchup

Preheat oven to 350 degrees.  Add ground beef and onion to browned bacon.  Brown ground beef.  Place all ingredients in a casserole dish and bake for 1/2 hour or until thoroughly heated.