Potatoes Dauphinoise, also known as Gratin Dauphinois, is the epitome of comfort food, blending the humble potato with cream, butter, and a golden crust to create a dish that is both luxurious and satisfying. Made famous by Julia Child, this French classic is a celebration of simple ingredients elevated by technique. Here, we explore the origins, techniques, and recipe for Potatoes Dauphinoise, staying true to Julia Child’s philosophy while adding a modern twist.

What Is Potatoes Dauphinoise?

Gratin Dauphinois is a traditional dish from the Dauphiné region of France. At its core, it involves layering thinly sliced starchy potatoes in a garlic-rubbed baking dish with cream, butter, and sometimes cheese. The dish is baked until the top forms a golden, crispy crust while the potatoes inside become tender and infused with creamy richness.

Looking for more creative ways to use potatoes? Learn how to transform humble potato peels into a surprisingly delicious pie.

The term “gratin” refers to the crispy, browned bits that form on the edges and surface of the dish during baking—a hallmark of French cuisine that delights the senses with its texture and aroma. Unlike scalloped potatoes, which use a roux of flour, butter, and milk, Potatoes Dauphinoise relies solely on cream and butter for its creamy consistency.

Julia Child’s Approach to Gratin Dauphinois

Julia Child’s recipe for Potatoes Dauphinoise is celebrated for its simplicity and effectiveness. She believed in letting the natural starchiness of the potatoes thicken the dish, forgoing flour or other thickeners. Her method emphasizes the importance of starchy potatoes like Russet or Maris Piper, which break down slightly during cooking to create a luscious texture.

Her original recipe does not include cheese, staying true to traditional French methods. However, modern adaptations often incorporate Gruyère or Swiss cheese for added flavor and a more indulgent finish.

Julia Child’s Gratin Dauphinois Recipe

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Ingredients

Ingredients (Serves 6):

2 pounds starchy potatoes (Russet, Maris Piper, or King Edward)
1/2 clove unpeeled garlic
4 tablespoons unsalted butter
1 teaspoon salt
1/8 teaspoon black pepper
1 cup (4 ounces) grated Swiss or Gruyère cheese (optional)
1 cup boiling milk or heavy cream

Instructions

Prepare the Potatoes

Preheat your oven to 425°F (220°C). Peel the potatoes and slice them thinly, about 1/8 inch thick. Place the slices in cold water to prevent discoloration. Drain and pat dry with a towel before use.

Prepare the Baking Dish

Cut the garlic clove in half and rub the cut side all over the inside of a baking dish. Smear the dish with 1 tablespoon of butter to prevent sticking and add flavor.

Layer the Potatoes

Arrange half of the potato slices in the dish. Sprinkle half of the salt, pepper, and grated cheese (if using) over the layer. Dot with 1 tablespoon of butter. Repeat with the remaining potatoes, seasonings, cheese, and butter.

Add the Cream

Pour the boiling milk or cream evenly over the layered potatoes. The liquid should just reach the top layer but not submerge it completely.

Bake the Gratin

Place the dish in the upper third of the preheated oven. Bake for 20–30 minutes, or until the potatoes are tender, the milk is absorbed, and the top is golden brown

Rest and Serve

Allow the gratin to cool for a few minutes before serving. This helps the layers set and makes it easier to portion.

A Modern Adaptation: Cheese-Topped Gratin Dauphinois

For an indulgent twist, try this version:

Increase the cheese to 2 cups, layering it between the potatoes and reserving some for the top.
Add a pinch of fresh thyme or nutmeg to the cream for extra depth.
Bake covered for 1 hour at 350°F (180°C), then uncover, top with cheese, and broil for 10 minutes to achieve a bubbly, golden crust.

Conclusion

Potatoes Dauphinoise is a timeless dish that combines the rustic charm of potatoes with the elegance of French culinary tradition. Whether you follow Julia Child’s minimalist approach or opt for a cheese-laden modern twist, this gratin is sure to impress at any table. Serve it alongside roasted meats, a crisp salad, or enjoy it as a luxurious standalone meal.

For those who believe in the magic of potatoes, Gratin Dauphinois is the ultimate tribute to their versatility and flavor. Bon appétit!