RecipeShare Test Kitchen

Thinly sliced potatoes baked in garlic thyme cream until tender and golden, with a classic French gratin texture and make-ahead friendly method.
Creamy gratin dauphinois is a classic potato bake known for tender layers, garlic aroma, and a rich but delicate cream texture. It is a side dish that feels special enough for gatherings but is straightforward enough for a weekend dinner.
This version keeps the traditional identity while making a few practical adjustments for modern home cooking. The method stays simple: even slices, warm cream mixture, covered bake, then a final uncovered finish for color and structure.
The flavor is subtle and layered rather than sharp. Garlic and thyme infuse the cream with savory depth, while nutmeg adds gentle warmth in the background.
Potatoes absorb seasoning as they bake, creating a soft center and lightly caramelized top. The overall taste is creamy, aromatic, and comforting without being overly heavy.
Potatoes are the main structure of the dish, so even slicing is important for texture consistency. A blend of milk and cream gives body while still allowing the potato flavor to remain central.
Greek yogurt is included in the liquid base to support creaminess and a slight tang while reducing the total cream load. Butter contributes richness and helps the top layer color during baking.
Thyme and garlic are key aromatics. They bring enough complexity that you do not need aggressive seasoning or heavy cheese throughout.
Start by layering thin potato slices in a buttered dish. Each layer should sit closely, but not packed too tightly, so the hot cream can flow through and cook evenly.
The cream base is warmed separately to dissolve butter and incorporate yogurt smoothly before it touches the potatoes. Keeping this step below a boil prevents splitting and keeps the final texture silky.
The bake is done in two phases. Covered baking softens the potatoes and allows gentle absorption. Uncovered baking at the end gives color and slight concentration on the surface.
A mandoline helps achieve uniform slices and is worth using for this recipe. Inconsistent thickness often leads to mixed textures in the finished dish.
Do not rush the rest period after baking. Ten minutes of resting helps the layers settle so portions lift cleanly.
If the top browns too quickly near the end, tent loosely with foil and continue baking until the center is fully tender.
If double cream is unavailable, use additional milk and increase Greek yogurt slightly for texture support. The result will be lighter but still creamy.
Fresh thyme can be replaced with a smaller amount of dried thyme. If using dried, add it to the warm cream base early so it hydrates properly.
You can omit Parmesan for a more traditional profile, or keep a light sprinkle for a modest golden finish.
Gratin is naturally a richer side, but this version moderates saturated fat by combining milk, a controlled amount of cream, and yogurt. Portioning is the most effective way to keep the dish aligned with heart-aware goals.
Pair this side with lean proteins and high-volume vegetables rather than additional creamy components. This keeps the meal balanced while preserving the gratin experience.
This dish is well suited to make-ahead service. You can assemble it earlier in the day, refrigerate, and bake when needed.
For advance prep, bake covered until nearly tender, cool, then refrigerate. Reheat uncovered in a hot oven until the center is warmed through and the top regains color.
Leftovers keep for up to 3 days in the fridge. Reheat portions in the oven for best texture rather than microwaving.
Potatoes are one of the most budget-friendly staples and scale well for larger households. Buying in larger bags often lowers cost per serving.
You can keep costs stable by using mostly milk and a smaller amount of cream, then relying on technique and seasoning for flavor rather than large amounts of cheese.
One serving is one-eighth of the dish, roughly 200 g cooked. This is a carb-forward side, so it is best served alongside lean protein and a non-starchy vegetable.
Training day adjustment: use the standard serving and match with a protein-forward main.
Rest day adjustment: reduce to about 150 g cooked and increase green vegetables on the plate.
Because this is a richer potato side, keep other saturated-fat additions moderate in the same meal. Tesco-friendly pairings include tenderstem broccoli, green beans, spinach, courgette, or mushrooms.
Thinly sliced potatoes baked in garlic thyme cream until tender and golden, with a classic French gratin texture and make-ahead friendly method.

Slice potatoes evenly so the layers cook at the same pace.
Let the gratin rest before slicing to help layers set.
We use affiliate links, which may earn us a small commission at no extra cost to you.
Preheat oven to 190C and lightly butter a casserole dish.
Toss sliced potatoes with garlic, thyme, salt, pepper, and nutmeg.
Layer potatoes evenly in the dish, pressing gently between layers.
In a saucepan, warm milk, double cream, Greek yogurt, and butter over low heat until smooth.
Do not boil; whisk until the yogurt is fully incorporated.
Pour the warm cream mixture over the layered potatoes.
Cover with foil and bake for 55 minutes.
Remove foil, add Parmesan on top if using, and bake 15 to 20 minutes until golden and tender.
Rest for 10 minutes before serving.
1/19/2026
I made it ahead and reheated for Sunday lunch, still creamy.
9/13/2025
Great recipe, though I reduced the cream a little for a lighter version.
9/12/2025
I added cheese on top before the final bake and it was excellent.
9/10/2025
Made it last night and the thyme was a great touch.
9/8/2025
So rich and comforting, just like in France. My family devoured it.
Create and edit your own recipes, import from most websites, plan your week, and build smart grocery lists.
Import recipes from most websites
Create and edit your own recipes
Plan your week with the Meal Planner
Mark favourites for quick access
Build grocery lists from your meal plan
Tick off pantry items you already have
Serving Size: 1 of 8 servings
* Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Add your personal creations and build your own recipe collection.