Place the beef in a slow cooker. Combine the remaining ingredients, except rolls, and pour over meat. Cover and cook on LOW for 8 to 9 hours. Refrigerate for later use or prepare the sandwiches now. Shred the beef by pulling it apart with two forks. Add one cup of the sauce and reheat the mixture in the microwave if you refrigerated it. Spoon on warm, open-face rolls or buns. Top with additional warm sauce, if desired. Makes 10-12 servings.