Classic French Gratin Dauphinois (with a twist)

This is classic French comfort at its finest: thinly sliced potatoes simmered in cream and milk, then baked until bubbling and deeply golden. As the potatoes cook, their starch naturally thickens the cream into a silky, velvety sauce — no shortcuts, just a fine, timeless French technique.

A traditional Dauphinois contains no cheese, but my favorite little “twist” is adding a layer of Gruyère on top near the end of baking. It creates a golden, crackly crust that’s just indulgent enough while still honoring the spirit of the classic.

Classic French Gratin Dauphinois

Golden Rules:

·                Don’t rinse the potatoes — the starch is what thickens the sauce.

·                Keep the dairy at a gentle simmer so it doesn’t scorch or boil over.

Ingredients:

·                2 ½ pounds Yukon Gold potatoes, peeled and thinly sliced (about ⅛ inch)

·                1 ½ cups whole milk

·                1 ½ cups heavy cream

·                2 large garlic cloves, smashed & finely minced

·                1 teaspoon kosher sea salt

·                Freshly cracked black pepper

·                1 tablespoon of freshly grated nutmeg

·                1 ½ teaspoon fresh chopped thyme + a couple thyme sprigs for garnish

·                1 ½ cups grated Gruyere or Emmental Cheese

·                1 tablespoon butter, for the baking dish (directions below)

Directions:

1.    Heat the cream mixture: In a large saucepan or Dutch oven, combine the milk, cream, garlic, salt, pepper, thyme, and nutmeg. Bring to a VERY gentle simmer over medium-low heat.

2.   Poach the potatoes: Add the sliced potatoes directly to the dairy. Simmer gently for 10-12 minutes, stirring occasionally, until the potatoes are just tender and the liquid has thickened slightly. (keep an eye on it so it doesn’t “boil” or scald!)

3.   Assemble the gratin: Heat oven to 375°F. Butter a 9x13-inch baking dish, then pour the potatoes and cream mixture into the dish and smooth the top.

4.   Bake: Bake for 40-50 minutes, until starting to turn deeply golden and bubbling. A knife should be able to easily slice through the center. Remove from oven and top with 2 sprigs of fresh thyme! Let dish rest 10 minutes before serving.

Optional Yummy “Twist” Cheese:

Traditional Gratin Dauphinois contains no cheese — the richness comes from the cream and potatoes alone. But if you’d like a golden cheesy crust, sprinkle about 1 ½ cups Gruyère or Emmental on top during the last 15 minutes of baking.