The words “au gratin” signal something particularly spectacular is about to be served. Au gratin recipes are baked with a browned topping of cheese and/or bread crumbs. You can find au gratin recipes like hearty chicken casseroles and cheesy potato dishes. Au gratin recipes are also particularly cherished holiday recipes! See exactly how it’s done—and how easy it is—in this video on how to make Potatoes au Gratin.