1Preheat oven to 350 degrees F (175 degrees C). Open the hoagie rolls and lay out on a baking sheet.
2Heat beef consomme and water in a medium saucepan over medium-high heat to make a rich beef broth. Place the roast beef in the broth and warm for 3 minutes. Arrange the meat on the hoagie rolls and top each roll with 2 slices of provolone.
3Bake the sandwiches in the preheated oven for 5 minutes, or until the cheese just begins to melt. Serve the sandwiches with small bowls of the warm broth for dipping.