How to make Gratin Dauphinois
- 1). Preheat the oven to 350 degrees F.
- 2). Peel and slice the potatoes into slices 1/8-inch thick. In a bowl, toss the potatoes with the minced garlic and salt and pepper to taste.
- 3). Liberally grease an ovenproof casserole with the butter. Arrange half the potato slices in the casserole, in a single layer if possible. Sprinkle on half the cheese. Repeat with the remaining potato slices and cheese.
- 4). Pour the milk around the inside edges of the casserole so as not to disturb the top layer of cheese. Do the same with the heavy cream.
- 5). Place the dish on a center rack of the oven and bake uncovered for about an hour or until the cheese is browned and bubbly and a knife inserted into a potato slice offers no resistance.
- 6). Allow the dish to rest for 20 minutes before serving.