Unroll crescents onto a large ungreased cookie sheet.
Place a slice of roast beef and a piece of cheese on each crescent.
Roll crescents starting from the wide end and ending at the narrow end.
Bake for 13 to 15 minutes, until crescents are a golden color.
Prepare the Au Jus gravy as directed on package.
Serve with Au Jus for dipping.
Notes
If you like a little kick to these crescents, spread a little horseradish sauce on the crescent roll before adding beef and cheese. We usually do in just for the adults.