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Classic French Gratin Dauphinois in a rustic baking dish

Gratin Dauphinois: The Ultimate Creamy French Potato Bake

Gratin Dauphinois is a classic French dish from the Dauphiné region, featuring thinly sliced potatoes baked in a rich, garlicky cream sauce. Unlike other potato gratins, this recipe omits cheese, relying on cream and slow baking to create its luxurious texture. Perfect as a side dish for meats or a stand-alone comfort food, this dish is a must-try for lovers of creamy, buttery goodness.
Prep Time 20 minutes
Cook Time 1 hour 30 minutes
Total Time 1 hour 50 minutes
Course Main Dish
Cuisine French
Servings 8

Equipment

  • Mandoline slicer or sharp knife
  • Large saucepan
  • Garlic press (optional)
  • 9x13-inch baking dish
  • Mixing bowl
  • Whisk
  • Aluminum foil

Ingredients
  

  • 2.5 lbs 1.2 kg Russet or Yukon Gold potatoes, peeled and thinly sliced (1/8 inch thick)
  • 2 cups 500 ml heavy cream
  • 1 cup 250 ml whole milk
  • 2 cloves garlic minced
  • 2 tbsp unsalted butter for greasing the dish
  • ½ tsp nutmeg ground
  • 1 ½ tsp salt
  • ½ tsp black pepper
  • 1 sprig fresh thyme optional
  • 1 bay leaf optional

Instructions
 

  • Step 1: Preheat the Oven
  • Preheat your oven to 325°F (160°C).
  • Grease a 9x13-inch baking dish generously with butter.
  • Step 2: Prepare the Cream Mixture
  • In a large saucepan, heat the cream, milk, garlic, nutmeg, salt, and black pepper over medium-low heat.
  • Add thyme and bay leaf (if using) and let it simmer gently for 5 minutes to infuse flavors.
  • Remove from heat and discard the herbs.
  • Step 3: Layer the Potatoes
  • Arrange a single layer of potato slices in the greased baking dish, slightly overlapping them.
  • Pour a small amount of the warm cream mixture over the potatoes.
  • Repeat the process, layering potatoes and cream, until all ingredients are used.
  • Step 4: Bake the Gratin
  • Cover the dish loosely with aluminum foil and bake for 60 minutes.
  • Remove the foil and bake for another 30 minutes until the top is golden brown and bubbly.
  • Check doneness by inserting a knife; it should slide through the potatoes easily.
  • Step 5: Rest and Serve
  • Let the gratin rest for 10-15 minutes before serving to allow the sauce to thicken.
  • Serve warm as a side dish or enjoy on its own!

Notes

Choice of Potatoes: Yukon Golds provide a creamy texture, while Russets yield a softer, fluffier consistency.
No Cheese Needed: Traditional Gratin Dauphinois does not include cheese; the cream naturally thickens during baking.
Make-Ahead Tip: You can prepare the dish up to 24 hours in advance and reheat it before serving.
For a Crispier Top: Increase the oven temperature to 375°F (190°C) for the last 10 minutes of baking.
Keyword Gratin Dauphinois, French potato gratin, creamy potato bake, classic French dish, gratin recipe, potato side dish, comfort food, no cheese potato gratin, authentic gratin dauphinois