Potato Gratin

Preparation

Step 1

Preheat oven to 350°F (Gas Mark 4). Grease a 9x13-in baking dish with butter and set aside.

Step 2

Heat milk with garlic in a medium saucepan over medium heat until small bubbles rise to surface. Remove and discard garlic. Add 1 cup cheese and whisk until melted.

Step 3

Beat egg in a large bowl and gradually add cheese mixture, then salt, black pepper and nutmeg. Whisk Chobani into mixture in three additions.

Step 4

Place sliced potatoes in two or three overlapping rows in prepared baking dish. Pour yogurt-cheese mixture over potatoes and sprinkle with remaining cheese. Bake until golden-brown and potatoes are tender when pierced with a paring knife, 40-50 minutes. Turn broiler on and broil gratin until golden-brown on top, 2-3 minutes. Let sit 10 minutes before serving.