T.G.I. Friday`s Au Gratin Potatoes Recipe

Bake potatoes in preheated oven at 400F, until completely cooked. Cool for 30 minutes at room temperature, then slice into half-inch thick rounds. Mix together the Bechamel sauce, salt and white pepper. Add remaining ingredients. Fold in potatoes. Place mixture in covered baking dish, in an oven, at 300F for one hour or until potatoes are hot all the way through. Remove the cover and allow potatoes to brown.