Mom’s Famous Picnic Beans

2 cans pork & beans

1 can kidney beans, drained

1 can butter beans, drained

1 small onion, chopped

1 pound hamburger, browned

1 pound bacon or sausage, browned

1 cup ketchup

1 cup brown sugar

1 tablespoon liquid smoke

3 tablespoons vinegar

Mix all ingredients together in slow cooker. Heat 3 to 4 hours until onions are soft.