Learn how to make a simple potatoes au gratin recipe—the creamy, cheesy scalloped potato casserole that’s a favorite all year long. In this video, you’ll see the best potatoes and cheese to use for scalloped potatoes and discover how to prepare very thinly sliced potatoes. You’ll see a great way to spread melted butter over your potato slices and how to layer your au gratin casserole, finishing with a layer of grated cheese and breadcrumbs. Baked in the oven until the potatoes are tender and the top is golden brown, a potato au gratin casserole is the perfect side dish for baked ham, roast chicken, pork, and beef, and chops. Get top-rated recipes for au gratin potatoes.