Rustic French Potato Gratin with Gruyère and Thyme
This classic French gratin is irresistibly creamy, with tender layers of potatoes and a rich, cheese-laced cream — an ideal side dish for an elegant dinner.
Preparation
Get these tasks done before you start cooking.
Preparing the Potato Slices
- 1
Preheat the oven
Preheat your oven to 350°F (175°C).
- 2
Slice the potatoes
Peel the potatoes and slice them thinly using a mandoline.
Tip: Use a mandoline slicer for perfectly thin and even potato slices.
- 3
Dry the slices
Rinse and pat dry them thoroughly with paper towels to remove excess starch.
Assembling the Gratin
- 1
Butter the dish
Butter a 9x13-inch baking dish generously with the softened butter.
- 2
Layer the potatoes
Layer one third of the potato slices at the bottom of the dish.
- 3
Season
Season lightly with salt, pepper, minced garlic, and a sprinkle of thyme.
Tip: Ensure potatoes are sliced evenly to cook uniformly.
How to Make Rustic French Potato Gratin with Gruyère and Thyme
Total time: 2 h 20 min · Yields 6 servings
- 1
Layering
Repeat the potato and seasoning layers twice more, ending with the top layer.
- 2
Cream Preparation
In a saucepan, gently heat the cream and milk over medium heat until heated through — do not boil.
- 3
Final Assembly
Pour the warm cream mixture over the layered potatoes, ensuring even coverage. Sprinkle the top with the additional Gruyère.
- 4
Baking
Cover and bake at 350°F for 1 hour 20 minutes.
- 5
Browning
Uncover, increase oven to 375°F, and bake for an additional 10 minutes until golden.
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