Yield
Serves 8
Photo: Charles Schiller; Styling: Lynn Miller

How to Make It

Step 1

Preheat oven to 425ºF. Grease a 9-inch round baking dish.

Step 2

Arrange half of onion slices in a circular pattern in dish, overlapping slightly. Repeat with potato slices, then sprinkle with 1/2 tsp. salt, 1/2 tsp. pepper and 1/2 cup Gruyère. Drizzle with 2 Tbsp. butter. Repeat with remaining ingredients, finishing with a top layer of potato slices.

Step 3

Bring milk to boil and carefully pour over potatoes. Bake until tender and golden, 45 to 55 minutes.

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