French Dip Crescents

2 packages crescent rolls, 8 count
1 pound deli roast beef, thinly sliced
4 ounces Swiss or provolone cheese, cut in 16 equal sized pieces
optional: Horseradish Sauce
optional: Au Jus for dipping 

Unroll crescents onto a large cookie sheet.  Spread a small dab of horseradish on each crescent, if desired, then 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 at 375 degrees for 11 to 13 minutes, until crescents are a golden color.  Serve with Au Jus and enjoy!