Preheat oven to 350°F. Arrange opened Cooking Bag in 13x9-inch baking pan or dish. Place meat in bag.
Mix Seasoning Mix and remaining ingredients; pour over meat. Close bag loosely with nylon tie. Cut 4 small holes in top of bag to allow steam to escape.
Bake in lower half of oven 1 hour for thinner chuck roast (less than 2 inches thick). Cook thicker roast 1 hour 15 minutes. Let stand 5 minutes before slicing.