"The humble potato gets the red carpet treatment in this easy yet luxurious recipe for potatoes au gratin Sliced Yukon Gold or russet potatoes (you can use either, but don't use a combination as they cook at different rates) are layered with half-and-half or heavy cream, topped with butter and grated cheese, then baked until golden and bubbly Feel free to play around: Add leeks, onions, garlic or more cheese between the layers..."