Preheat your oven to 350 degrees.
Open your crescents and unroll onto a cookie sheet.
Smear a little dab of horseradish onto each crescent (Depending on how much of a kick you want use more or less)
Add a piece of cheese and a piece of roast beef on each crescent.
Roll your crescents up.
Bake for 11-13 minuets or until golden brown.
Serve hot with dipping sauce