This Gratin Dauphinois is the French potato gratin at its most beautiful: thin potato slices stood upright in a round dish like the petals of a flower, bathed in garlic- and thyme-infused cream and baked until the edges turn crisp and golden while the middle stays silky and tender. It looks like a showpiece, but it is just potatoes, milk, cream and a few aromatics.
It is the perfect side for a roast, a holiday dinner or a cozy Sunday. Below you will find how to slice and arrange the potatoes, why you simmer the cream first, and how long to bake so the potatoes are fully tender before the top browns.
Watch how it’s made
This recipe was inspired by a viral video from @_nada_dl. Watch the original here:
@_nada_dl Gratin dauphinois
What makes this gratin dauphinois so good?
Two things: the infused cream and the upright arrangement. Simmering the milk and cream with garlic, thyme, bay leaves, butter, salt and pepper before it goes into the oven does two jobs. It flavors the liquid all the way through, and it gives the potatoes a head start so they cook evenly. Standing the slices on their edges instead of layering them flat means every slice has a thin edge poking up that crisps in the oven, while the bottoms simmer gently in the cream.
A traditional gratin dauphinois from the Dauphiné region of France contains no cheese at all, just potatoes, cream and garlic. This version adds a handful of shredded cheese for the last few minutes, which is how many home cooks love it. Leave it off for the classic style.
The most common mistake? Rinsing the sliced potatoes. The surface starch on freshly cut potatoes is what thickens the cream into a velvety sauce. Peel and rinse the whole potatoes, then slice and use them straight away without washing the slices.
Key ingredients and why they matter
| Key Ingredient | What To Use | Why It Matters |
|---|---|---|
| Potatoes | Yukon Gold or other waxy-to-all-purpose potatoes | Hold their shape in thin slices and turn creamy when baked. |
| Milk and cream | Whole milk plus heavy cream | The mix is rich but not heavy and will not curdle in the oven. |
| Garlic | Fresh cloves, smashed or minced | The signature flavor of a dauphinois. |
| Thyme and bay | Fresh thyme sprigs, dried bay leaves | Classic French aromatics that perfume the cream. |
| Butter | Unsalted butter | Greases the dish and enriches the sauce. |
| Cheese (optional) | Gruyère, Comté or mozzarella | A golden, bubbly finish on top. |
Gratin Dauphinois
Thinly sliced potatoes stood upright and baked in garlic and thyme infused cream until golden and tender.
Ingredients
- 2 1/2 lb (about 1.1 kg) Yukon Gold potatoes, peeled
- 1 2/3 cups (400 ml) whole milk
- 2 cups (500 ml) heavy cream
- 2 tablespoons (30 g) unsalted butter, plus more for the dish
- 3 cloves garlic, smashed
- 4 sprigs fresh thyme (or 1/2 teaspoon dried)
- 2 bay leaves
- 1 1/2 teaspoons fine salt
- 1/2 teaspoon black pepper
- Pinch of ground nutmeg
- 1 cup shredded Gruyère or mozzarella (optional)
- Chopped parsley, for garnish
Instructions
- Heat the oven to 400°F (200°C). Generously butter a 9- or 10-inch round baking dish.
- Slice the peeled potatoes into thin rounds about 1/8 inch (3 mm) thick, ideally with a mandoline. Do not rinse the slices.
- Stack the slices in small bundles and stand them upright around the edge of the dish, working inward in rings until the dish is snugly filled. Tuck remaining slices into any gaps.
- In a saucepan, combine the milk, cream, butter, garlic, thyme, bay leaves, salt, pepper and nutmeg. Bring to a gentle simmer over medium-low heat and cook for 5 minutes, stirring, without letting it boil hard.
- Remove the bay leaves and thyme stems and pour the hot cream evenly over the potatoes, letting it seep down between the slices. It should come about three-quarters of the way up.
- Cover with parchment paper and bake for 40 minutes. Uncover and bake 15 minutes more until the edges begin to brown.
- Sprinkle with the cheese, if using, and bake another 10 minutes until golden and bubbling and a knife slides into the center with no resistance. Rest 15 minutes, garnish with parsley and serve.
Gratin dauphinois vs. scalloped potatoes vs. potatoes au gratin
| Dish | Liquid | Cheese | Texture |
|---|---|---|---|
| Gratin dauphinois | Milk and cream infused with garlic | Traditionally none | Silky, creamy, delicate |
| Scalloped potatoes | Cream or a flour-thickened white sauce | Usually none | Soft layers in a thick sauce |
| Potatoes au gratin | Cream or béchamel | Cheese layered and on top | Rich with a crusty cheese top |
| Gratin savoyard | Beef or chicken stock | Beaufort or Gruyère | Lighter, more savory |
Common problems and how to fix them
| Problem | Likely Cause | Easy Fix |
|---|---|---|
| Potatoes still hard in the middle | Slices too thick or dish uncovered too soon | Slice 1/8 inch thick and keep covered for the first 40 minutes. |
| Sauce looks curdled | Only milk used, or boiled too hard | Use the milk and cream mix and simmer gently. |
| Thin, watery sauce | Slices were rinsed | Do not rinse sliced potatoes; their starch thickens the cream. |
| Top burned before center cooked | Oven runs hot | Tent with foil and lower the oven to 375°F. |
| Bland flavor | Cream under-seasoned | Taste the cream before pouring; it should taste slightly salty. |
Tips and variations
- Use a mandoline: Even slices cook evenly. Always use the hand guard.
- Make it ahead: Bake fully a day ahead, refrigerate, then reheat covered at 350°F for 25–30 minutes. It slices more neatly once chilled.
- Classic style: Skip the cheese and rub the dish with a cut garlic clove before buttering for the most traditional flavor.
- Add onions: Tuck thin slices of shallot or caramelized onion between the potatoes.
- Rectangular dish: Stand the slices in rows instead of rings in a 9×13-inch dish; bake time is about the same.
- Let it rest: Resting 15 minutes lets the cream set so it does not run all over the plate.
What to serve with gratin dauphinois
Because it is so rich and creamy, gratin dauphinois pairs best with simply cooked proteins and something fresh and green to cut through the cream. In France it is the classic partner for a roast leg of lamb or a beef roast, and it is just as good next to a pan-seared steak, roast chicken, pork tenderloin or a holiday ham. For fish, choose something with a bit of acidity, like salmon with lemon or a mustard glaze.
On the side, a crisp green salad with a sharp mustard vinaigrette, steamed green beans, roasted asparagus or glazed carrots all balance the plate. One 9- or 10-inch dish serves six as a side; for a larger holiday crowd, double the recipe in a 9×13-inch dish and add about 10 minutes to the covered baking time.
Leftovers keep well in the fridge, covered, for up to 3 days. Reheat individual portions in a small baking dish at 350°F until hot all the way through, or microwave at medium power, adding a spoonful of milk or cream if the sauce looks tight. Freezing is not recommended, as the cream can turn grainy and the potatoes watery once thawed.
More potato sides to try: our air fryer scalloped potatoes, or serve this gratin with the maple Dijon salmon for a special dinner.
Frequently Asked Questions
Does gratin dauphinois have cheese?
The traditional French version does not. It is just potatoes, cream, milk and garlic. Many home cooks add Gruyère or mozzarella on top for the last 10 minutes, which is optional.
What are the best potatoes for gratin dauphinois?
Yukon Gold or other all-purpose yellow potatoes are ideal. They hold their shape when sliced thin but have enough starch to thicken the cream. Russets work but can turn a little mushy.
Why should I not rinse the potato slices?
The starch on the surface of the slices thickens the milk and cream into a smooth sauce as it bakes. Rinsing washes it away and leaves the gratin watery.
Can I make gratin dauphinois ahead of time?
Yes. Bake it completely, cool, cover and refrigerate for up to 3 days. Reheat covered at 350°F until hot in the center, then uncover for the last few minutes to re-crisp the top.
How do I know when it is done?
The top should be deep golden, the cream bubbling at the edges, and a thin knife should slide through the center potatoes with no resistance.
