All-Crust Sheet-Pan Scalloped Potatoes

All-Crust Sheet-Pan Scalloped Potatoes
Prep Time
10 min
Cook Time
45 min
8 - 10 servings

This super-sized version of a classic side dish maximizes the crunchy, browned bits without sacrificing the creaminess of the potatoes underneath.



Tbsp unsalted butter, for greasing pan
cups heavy cream
cloves garlic, minced
tsp fresh thyme leaves, finely chopped
Kosher salt and freshly ground black pepper
2 ¼
lbs medium Yukon Gold potatoes, scrubbed (about 8)
cup grated Parmesan
1 ½
cups shredded Gruyere (4 ½ oz)



Special equipment: an 18-by-13-inch sheet pan

Step 1

Preheat the oven to 450ºF. Lightly grease an 18-by-13-inch sheet pan with the butter.

Step 2

Bring the cream, garlic, thyme, 1/2 teaspoon salt and 1/4 teaspoon pepper to a simmer in a small saucepan over medium heat, then turn off stove.

Step 3

Thinly slice the potatoes on a mandoline or vegetable slicer (about 1/8-inch-thick rounds.) Arrange half the potato slices into a single, overlapping layer on the sheet pan, and sprinkle evenly with salt and half the grated Parmesan. Top with the remaining potato slices and sprinkle with salt. Drizzle the hot cream mixture evenly over the potatoes.

Step 4

Cover the pan with foil and bake until the potatoes are tender when pierced with a paring knife, about 20 minutes. Carefully remove the foil and sprinkle the potatoes with Gruyere and the remaining Parmesan. Cook uncovered until very brown and crusty on top, rotating the pan halfway through, 15 to 20 minutes more.

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