Start the au jus first by heating up a can of beef stock. Add the boullion and let it come to a boil. Then heat up the meat in the microwave. I actually just used the Oscar Meyer Premium Roast Beef and it was great! Cut the loaf of French bread horizontally, then across. Open up the slices of bread so the soft part is face down and the crust is facing up. Place them all on a cookie sheet and broil in the oven for a few minutes until they are toasted. Take them out and layer them with plenty of roast beef, topped with a slice of Swiss Cheese. Take out the top of the sandwich and broil again until the cheese is melted (about 3-4 minutes.) Immediately after you take it out, put the sandwich tops on so the cheese melts to the top. Serve with the au jus.
Recipe by Honeybear Lane at https://www.honeybearlane.com/2013/03/super-fast-french-dip-sandwiches.html