Easy Crock Pot Beans and Franks

3 cans (16 ounces each) pork and beans
1 pound hot dogs, cut into 1-inch pieces
1/2 cup ketchup
1 small onion, chopped
1/4 cup molasses
1 tablespoon prepared mustard

In slow cooker, combine beans, franks, ketchup, onion, molasses, and mustard. Cover and cook on LOW for 6 to 8 hours. Serves 6.