Summary: Gratin Dauphinois is a classic French casserole of thinly sliced potatoes slowly baked in seasoned garlic cream, featuring a tender, velvety interior and a rich, golden-brown crust. Utilizing the traditional potato starch without any cheese, this dish requires precise layering and baking over 90 minutes to achieve its signature melt-in-the-mouth texture for 6 portions.
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Category: Main Dishes, French Cuisine
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Quick overview
- Dish: Gratin Dauphinois
- Category: Main Dishes, French Cuisine
- Cuisine: French
- Main ingredient: Maris Piper potatoes, 1,200 g (starchy variety)
- Guide: 12 most popular French dishes: favourite recipes of French cuisine
- Total time: 115 minutes (25 min prep + 90 min cooking)
- Difficulty: Medium
- Portions: 6 portions (Portion weight: 260.0 g)
- Key technique: Slow baking and starch thickening without cheese
- Preparation types: Slicing, infusing, layering, and baking
- Dietary info & Allergens: Contains milk, garlic
- Suitable for: Sunday lunches, festive dinners, celebratory menus
- Nutritional values (per 1 portion): 345.5 kcal, Protein: 6.8 g, Fat: 22.4 g, Carbohydrates: 31.2 g
- Storage: 3 days in the fridge, 2 months in the freezer
- Pairing: Dry cider, Chardonnay, sparkling mineral water
- In short: Velvety potato slices baked in garlic-infused double cream until tender and golden.
- Last updated: 21 September 2026
WAGUU says: “True Gratin Dauphinois never contains cheese; its magnificent crust and silken sauce emerge entirely from the alchemy of starchy potatoes, seasoned double cream, and slow oven heat.”
How to take it further: Infuse a strip of lemon zest into the warm cream, or brush the baking dish with duck fat before rubbing with garlic.
Key facts
| Prep time: | 25 minutes |
| Cooking time: | 90 minutes |
| Temperature: | 160 °C |
| Number of portions: | 6 portions |
In a nutshell
Experience the authentic taste of the French Alps with this traditional Gratin Dauphinois. By gently infusing double cream with crushed garlic and a pinch of freshly grated nutmeg, then slow-baking paper-thin potato slices without washing away their precious starch, you create a dish that balances a meltingly soft interior with a deeply savoury, golden crust.
Ingredients
Base portions: 6 portions • Portion weight: 260.0 g
| Ingredient | Amount | Quality |
|---|---|---|
| Maris Piper potatoes | 1200 g | Firm, starchy, peeled |
| Double cream | 400 ml | Full fat, rich |
| Whole milk | 200 ml | Full fat |
| Garlic cloves | 3 pcs | Fresh, crushed and minced |
| Unsalted butter | 30 g | Softened, for greasing and dotting |
| Fine sea salt | 12 g | Pure sea salt |
| Ground white pepper | 2 g | Freshly ground |
| Nutmeg | 2 g | Freshly grated |
Why you will love this recipe
- Authentic French technique: Crafted without cheese, allowing the pure starch of the potato to bind naturally with rich double cream.
- Unmatched comfort food: Delivers a combination of silky, cream-infused layers and a deeply caramelised top crust.
- Reliable proportions: Perfectly balanced seasoning and dairy ratios guarantee consistent results every single time.
Why it works: Slow baking at a moderate temperature ensures the potato slices cook through evenly without curdling the dairy, while the exposed top layer browns into a savoury crust.
Recipe overview
Prep: 25 min | Cooking: 90 min | Difficulty: Medium | Portions: 6 portions | Type: Main course | Origin: French
Detailed instructions
Overall progress: 0% complete
Phase 1: Preparing the baking dish and slicing potatoes – 15 min
Appliances: Oven
1. Preheat your oven to 160 °C. Take a ceramic baking dish measuring 30×20 cm and thoroughly rub the interior base and sides with 10 g of softened unsalted butter. Peel 1200 g of Maris Piper potatoes and slice them uniformly to a thickness of 3 mm using a mandoline. Do not wash the potato slices after cutting, as their natural surface starch is essential for thickening the cream sauce later.
VKB: Visual check point (VKB): Potato slices are evenly cut to 3 mm thickness and have a slightly powdery surface starch layer.
Before moving to the next step:
Ensure the oven has reached a stable 160 °C and that the potato slices are kept dry and unwashed.
Phase 2: Infusing the dairy mixture – 10 min
Appliances: Hob
2. Place a saucepan on the hob over medium heat. Pour in 400 ml of double cream and 200 ml of whole milk. Add 3 crushed garlic cloves, 12 g of fine sea salt, 2 g of ground white pepper, and 2 g of freshly grated nutmeg. Bring the mixture to a gentle simmer for 3 minutes, stirring constantly to blend the garlic and spices into the dairy without scorching the bottom.
VKB: VKB: The liquid is gently steaming and aromatic, perfectly unified with no separation of fats.
Before moving to the next step:
Check that the cream and milk mixture is steaming hot and evenly seasoned before pouring over the potatoes.
Phase 3: Layering the gratin – 10 min
Appliances: None
3. Arrange half of the sliced potatoes neatly in overlapping rows across the bottom of the buttered baking dish. Ladle half of the hot garlic-infused cream mixture evenly over the potato layer. Layer the remaining potato slices on top, pressing down gently to compact them, and pour the rest of the warm cream mixture over the top. Dot the surface evenly with the remaining 20 g of unsalted butter cut into small pieces.
VKB: VKB: The liquid level comes just below the top layer of potatoes, and butter dots are evenly distributed.
Before moving to the next step:
Confirm that the potatoes are tightly packed so there are no large air pockets between the layers.
Phase 4: Slow baking – 80 min
Appliances: Oven
4. Place the baking dish into the preheated oven at 160 °C and bake undisturbed for 80 minutes. The slow heat allows the starches to release fully into the dairy, thickening the sauce naturally while cooking the potato slices through to a tender, melt-in-the-mouth consistency.
VKB: VKB: The cream is bubbling gently around the edges, and a thin knife slides through the potato layers with zero resistance.
Before moving to the next step:
Test the center potatoes with a skewer to ensure they are fully tender before proceeding to browning.
Phase 5: Browning the crust – 10 min
Appliances: Oven
5. Increase the oven temperature to 200 °C or switch on the grill function. Bake the gratin for an additional 10 minutes until the top layer of potatoes and butter takes on a rich, deep golden-brown color with slightly crisp edges.
VKB: VKB: The surface displays an even, amber-gold crust with bubbling cream pockets.
Before moving to the next step:
Watch the oven closely during this browning stage to prevent the butter from burning.
Phase 6: Resting and serving – 15 min
Appliances: None
6. Remove the gratin from the oven and let it rest undisturbed at room temperature for 15 minutes. This crucial resting period allows the boiling cream and starch emulsion to settle and firm up, ensuring clean portions when sliced and served.
VKB: VKB: The gratin holds its shape firmly when cut into squares with a spatula.
Required equipment
| Utensil | Ideal size | Alternative | Risk |
|---|---|---|---|
| Ceramic baking dish | 30×20 cm | Cast iron gratin dish | Overflow if dish is too small |
| Mandoline slicer | 3 mm blade | Chef’s knife | Uneven potato thickness |
| Saucepan | 1.5 l capacity | Small pot | Dairy boiling over |
Shopping list
Nutritional profile
Values per 1 portion (excluding side dishes). Calculated from average nutritional values of ingredients.
| Nutrient | Per 100 g | Per 1 portion | Per 6 portions |
|---|---|---|---|
| Energy | 132.9 kcal | 345.5 kcal | 2073.0 kcal |
| Fat | 8.6 g | 22.4 g | 134.4 g |
| of which saturates | 5.4 g | 14.0 g | 84.0 g |
| Carbohydrates | 12.0 g | 31.2 g | 187.2 g |
| of which sugars | 1.1 g | 2.9 g | 17.4 g |
| Protein | 2.6 g | 6.8 g | 40.8 g |
| Salt | 0.8 g | 2.0 g | 12.0 g |
Reference intake of an average adult (8400 kJ / 2000 kcal).
WAGUU Pro Level
- Pro standard: Verified recipe with precise ratios and visual control points.
- Tip 1: Choose floury potatoes like Maris Piper or King Edward, as their high starch content naturally thickens the cream without requiring flour or cheese.
- Tip 2: Never rinse the potato slices after cutting; the surface starch is essential for creating the luxurious, velvety emulsion.
- Tip 3: Infusing the garlic gently in the cream before layering ensures a smooth, even distribution of flavour throughout every single layer.
- Tip 4: Allow the baked gratin to rest for 15 minutes before serving so the sauce settles and portions hold their shape cleanly.
Scientific background
The success of Gratin Dauphinois relies on starch gelatinisation and dairy emulsification. As the potatoes bake slowly in double cream and milk, starch granules burst and absorb moisture, thickening the surrounding fat and water emulsion into a rich sauce. Maintaining a moderate oven temperature prevents the dairy fats from separating and curdling, ensuring a smooth, silken texture throughout the layers.
Fine Dining – Professional techniques
- Plate composition: Cut precise, neat squares using a sharp knife and plate in the center of a warm shallow bowl.
- Textural contrasts: Pair the velvety, soft interior layers with the crisp, golden crust on top.
- Temperature contrast: Serve piping hot alongside cool, crisp bitter greens dressed in a sharp vinaigrette.
- Aromatic garnishes: Finish with a whisper of freshly grated nutmeg and a scattering of finely chopped chives.
Sensory radar
- Appearance: Golden-brown crust with neatly stacked layers visible at the edges.
- Aroma: Rich dairy, fragrant garlic, and warm earthy nutmeg.
- Taste: Deeply savoury, creamy, and subtly sweet potato flavor.
- Texture: Melt-in-the-mouth tender interior with a contrasting crisp surface.
Pairing
- BEER: A crisp French Bière de Garde or a dry artisanal cider.
- WINE: A medium-bodied oaked Chardonnay or a dry white Burgundy.
- NON-ALCOHOLIC: Sparkling apple juice infused with a sprig of fresh thyme.
Various preparation variants
- Herb-infused variant: Add a couple of fresh thyme sprigs to the dairy while it infuses on the hob for an herbal undertone.
- Celeriac blend variant: Replace 300 g of the potatoes with thinly sliced celeriac for a nutty, earthy depth of flavor.
Allergens and dietary information
Contains: Milk • Gluten: Naturally gluten-free • Not suitable for: Dairy intolerance, vegans
Suitable for
Sunday lunches, festive dinners, celebratory menus
Substitution catalog
- Maris Piper potatoes: King Edward potatoes
- Double cream: Whipping cream mixed with a tablespoon of melted butter
FAQ
Should I wash the potato slices before baking?
No, you should never wash the potato slices after cutting. The surface starch is crucial for thickening the cream and milk mixture into a rich sauce.
Can I add cheese to Gratin Dauphinois?
Traditional Gratin Dauphinois does not contain cheese. Adding cheese technically turns it into a Gratin Savoyard, though both are delicious.
Why did my cream curdle during baking?
Curdling usually happens if the oven temperature is set too high. Baking at a gentle 160 °C prevents the dairy proteins from separating.
Can I prepare this dish in advance?
Yes, you can assemble the gratin a few hours ahead, cover and refrigerate, then bake just before serving.
WAGUU Petr advises: Cooking for 12 or more people?
12–16 people: Prepare two separate 30×20 cm baking dishes and bake them on different oven shelves, swapping their positions halfway through cooking. • 20+ people: Use deep hotel pans, scale ingredients proportionately, and extend the initial slow-baking time by 15 minutes.
Sides and Serving
- Crisp green salad with lemon mustard dressing – (not included in the recipe)
- Roasted garlic green beans – (not included in the recipe)
Serving: Serve warm as a rich main course or alongside roast meats.
Storage and reheating
Fridge: 3 days • Freezer: 2 months • Reheating: Reheat covered in an oven at 160 °C for 20 minutes until piping hot.
Author: WAGUU Petr & Team • Published: 21 Sep 2026 • Updated: 30 Oct 2026
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Common mistakes
- Washing potato slices – Rinsing away the surface starch prevents the cream from thickening properly.
- Adding cheese – True Gratin Dauphinois relies entirely on potato starch and cream, without cheese.
- Baking at too high a temperature – High heat causes the dairy fats to curdle and separate instead of forming a smooth sauce.
- Skipping the resting time – Cutting the gratin immediately out of the oven causes the layers to slide apart.