Step 1

Cut roast in half. Mix onion powder, garlic powder and Creole seasoning; rub onto beef. Place in a 5-qt. slow cooker; add stock. Cook, covered, on low until meat is tender, 8-10 hours.

Step 2

Remove beef; cool slightly. Skim fat from cooking juices. When cool enough to handle, shred beef with 2 forks and return to slow cooker.

Step 3

Place buns on ungreased baking sheets, cut side up. Using tongs, place beef on bun bottoms. Place cheese on bun tops. Broil 3-4 in. from heat until cheese is melted, 1-2 minutes. Close sandwiches; serve with cooking juices.