Set oven to broil - high.

Add pepper and garlic powder to beef broth. Bring to a boil.

Reduce broth to low, add roast beef, cover and cook 5 mins or until beef browns.

While beef is cooking, combine mayonnaise and horseradish sauce. Slice hoagies in half lengthwise and spread thin layer of the mayo-horseradish mixture onto the hoagies. Sprinkle with Italian seasoning.

Remove roast beef from broth with slotted spoon and add to sandwiches. Top roast beef with provolone cheese. Broil for 3 minutes or until slightly crispy.

Serve with sandwiches for dipping.