Adrienne's Overnight Barbecued Beef Sandwiches

1 large onion, chopped 1/2 cup brown sugar 1 teaspoon ground black pepper 1/4 teaspoon…

3 leeks 6 tablespoons butter, divided 1/4 cup all-purpose flour 2 (15 ounce) cans chicken…

1 (4 pound) boneless beef chuck roast 1/2 cup all-purpose flour salt and ground black…

1 pound pork roast, cut into 1 inch cubes 1 (32 ounce) jar sauerkraut with…

1 pound ground round 1 cup chopped onion 1 cup hot water 2 (14.5 ounce)…

1 pound mushrooms 1/2 cup butter 1 (1 ounce) envelope ranch salad dressing mix 1.…

1 (5 pound) bone-in pork shoulder roast 1 tablespoon salt ground black pepper 1 1/2…

1 (8 ounce) package processed cheese food (such as Velveeta®) 2 tablespoons reduced-fat cream cheese…

4 skinless, boneless chicken breast halves 1 (10.75 ounce) can condensed cream of chicken soup…