How to Make French Potato Gratin (Gratin Dauphinois)

If you're looking to impress at your next dinner party or simply want to enjoy a delicious, comforting side dish, mastering the art of making French potato gratin, or Gratin Dauphinois, is essential. This creamy, cheesy delight is a classic French dish that showcases layers of thinly sliced potatoes baked in a rich, flavorful cream sauce. Here’s how to create the perfect Gratin Dauphinois.

Ingredients

2 pounds of Yukon Gold potatoes
2 cups heavy cream
2 cups whole milk
2 cloves garlic, minced
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon nutmeg (optional)
1 1/2 cups grated Gruyère cheese
2 tablespoons unsalted butter

Instructions

Step 1: Prepare the Potatoes

Start by preheating your oven to 350°F (175°C). While the oven is heating, peel the Yukon Gold potatoes and slice them thinly, ideally using a mandoline for even thickness. This ensures that your gratin cooks evenly.

Step 2: Make the Cream Mixture

In a mixing bowl, combine the heavy cream, whole milk, minced garlic, salt, black pepper, and nutmeg (if using). Whisk until well combined.

Step 3: Assemble the Gratin

Grease a 9x13 inch baking dish with one tablespoon of the unsalted butter. Begin layering the sliced potatoes in the dish, slightly overlapping each layer. Once you have a layer, pour some of the cream mixture over the potatoes, followed by a sprinkle of the Gruyère cheese. Repeat this process until all the potatoes and cream mixture are used up. End with a final layer of cheese on top.

Step 4: Add the Finishing Touches

Dot the top of the gratin with the remaining tablespoon of butter. This helps achieve a beautifully golden, crispy top. Cover the dish with aluminum foil and place it in the preheated oven.

Step 5: Bake

Bake the gratin for about 45 minutes, then remove the aluminum foil and bake for an additional 15 to 20 minutes or until the top is golden brown and the potatoes are tender when pierced with a fork.

Step 6: Let It Rest

Once out of the oven, allow the gratin to rest for about 10 to 15 minutes. This will enable the cream to set slightly, making it easier to serve.

Serving Suggestions

Gratin Dauphinois can be served as an accompaniment to roasted meats, poultry, or even a simple green salad. The creamy texture and cheesy layers make it a versatile side dish that pairs well with many main courses.

Tips for the Best Gratin Dauphinois

Choose starchy potatoes, like Yukon Golds or Russets, for the best texture.
For a more intense flavor, mix different cheeses such as Emmental or a sharp cheddar.
Feel free to add herbs like thyme or rosemary for added depth.

Now that you're equipped with this classic recipe for French Potato Gratin, it’s time to bring a taste of France to your dining table. Enjoy every creamy, cheesy bite!