Creamy Au Gratin Potatoes (Print view)

Tender potatoes layered with rich cream and melted cheese for a decadent golden side.

# What You'll Need:

→ Potatoes

01 - 2 pounds Yukon Gold or Russet potatoes, peeled and thinly sliced

→ Cream Sauce

02 - 2 cups heavy cream
03 - 1 cup whole milk
04 - 2 garlic cloves, minced
05 - 1/2 teaspoon salt
06 - 1/4 teaspoon freshly ground black pepper
07 - 1/4 teaspoon grated nutmeg

→ Cheeses

08 - 1 1/2 cups grated Gruyère cheese
09 - 1/2 cup grated Parmesan cheese

→ Garnish

10 - 2 tablespoons chopped fresh chives or parsley

# Cooking Steps:

01 - Preheat oven to 375°F. Lightly butter a 9x13-inch baking dish.
02 - In a medium saucepan, combine heavy cream, milk, minced garlic, salt, pepper, and nutmeg. Heat over medium-low heat until just steaming, not boiling. Remove from heat.
03 - Arrange half of the sliced potatoes in an even layer in the prepared baking dish.
04 - Sprinkle half of the Gruyère and Parmesan cheeses over the potatoes.
05 - Layer the remaining potatoes evenly on top. Pour the warm cream mixture evenly over all potatoes.
06 - Top with the remaining Gruyère and Parmesan cheeses.
07 - Cover the dish loosely with aluminum foil and bake for 40 minutes.
08 - Remove foil and bake an additional 20 to 25 minutes until the top is golden brown and potatoes are tender when pierced with a knife.
09 - Allow to stand 10 minutes before serving. Garnish with chives or parsley if desired.

# Expert Ideas:

01 -
  • It's the kind of side dish that steals the show—people forget about everything else on their plate.
  • Once it's in the oven, you're genuinely free to handle other things, making it perfect for entertaining.
  • The combination of Gruyère and Parmesan creates this complex, savory depth that feels far more special than it should.
02 -
  • Slice your potatoes thin and as consistently as possible—thick pieces will be hard in the center while thin ones turn mushy, so a mandoline slicer is worth its weight if you make this regularly.
  • The cream must be hot when it hits the potatoes so they start cooking immediately, but don't let it boil earlier or you risk a broken sauce that looks grainy and disappointing.
03 -
  • If your cream sauce breaks or looks grainy, strain it through a fine sieve before pouring—it won't fix everything but it helps, though prevention is better than rescue.
  • The secret that changed my version forever was adding a tiny pinch of cayenne pepper to the cream mixture, which adds a gentle warmth without heat and makes the nutmeg sing.
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