Instructions

1. Preheat the broiler (for toasting the rolls and melting the cheese. Alternately, you can use a toaster oven).
2. Melt butter in a medium pot. Add shallot and cook over medium-low heat for 3-4 minutes until softened.
3. Add fresh thyme and then sprinkle in the flour. Stir to combine with the shallots and then pour in the sherry and whisk together. Pour in the beef broth while whisking and then season the au jus with salt and pepper to taste. Bring to a boil and then turn down and let simmer until the sandwiches are ready.
4. While the au jus is simmering, place the open sub rolls on a baking sheet and toast lightly under the broiler. Remove the rolls from the oven, add 2 slices of cheese to each side of each sub roll and then place back under the broiler for a minute or two to melt the cheese. Remove the rolls from the oven.
5. Place the roast beef on a board, spreading out so that you can season the roast beef with the steak seasoning.
6. Using tongs, dip the roast beef into the au jus and then divide between the 4 sub rolls. Serve with extra au jus on the side for dipping.