Chef John’s Truffled Potato Gratin
A rich potato dish with mushrooms and truffle cheese. The earthy flavors of the mushrooms and truffle cheese make it a satisfying meal.
The potatoes are layered with mushrooms, cheese, and herbs, then baked in a creamy sauce.
This dish is great as a main course or a side.
By Nadia Kovalenko
Posted October 12, 2026Share
Time
Calories
Servings
Difficulty
Description
A rich potato dish with mushrooms and truffle cheese. The earthy flavors of the mushrooms and truffle cheese make it a satisfying meal.
The potatoes are layered with mushrooms, cheese, and herbs, then baked in a creamy sauce.
This dish is great as a main course or a side.
Quick Tip Read the recipe in its entirety before you start cooking. This will help you understand the ingredients, steps, and timing involved, and allow you to prepare any necessary equipment or ingredients beforehand.
Ingredients 11
1.3333333730698 tablespoons butter
1 tablespoon olive oil
5 cups sliced mushrooms
2 teaspoons butter, softened
1 clove garlic, minced
5 russet potatoes, peeled and very thinly sliced
1 teaspoon minced fresh thyme, divided
salt and freshly ground black pepper to taste
6 ounces sottocenere (Italian semi-soft truffle cheese), shredded
2 cups heavy whipping cream
1 cup chicken stock
Instructions
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1
Melt 1 1/3 tablespoons butter with 1 tablespoon olive oil in a large saucepan over medium-high heat. Add 5 cups sliced mushrooms and cook until the edges are browned, about 15-20 minutes.
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2
Preheat the oven to 350 degrees F.
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3
Mix 2 teaspoons softened butter with 1 clove minced garlic. Grease a 9x13-inch baking dish with the garlic butter.
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4
Layer 1/3 of the 5 thinly sliced potatoes in the baking dish. Season with salt, black pepper, and 1/2 teaspoon thyme. Add 1/2 of the cooked mushrooms and 1/2 of the 6 ounces shredded sottocenere cheese. Repeat the layers, finishing with the remaining potatoes. Pour 2 cups heavy whipping cream and 1 cup chicken stock over the top. Season with salt and black pepper. Top with the reserved 3 tablespoons cheese. Cover with aluminum foil.
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5
Bake in the preheated oven for 45 minutes. Remove the foil and cook for 15 minutes more, until the top is browned. Let it cool a bit before serving.
Nutrition Facts
Servings 6
Amount Per Serving
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Calories 641 kcal
% Daily Value *
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Total Fat 45g
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Saturated Fat 27g
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Cholesterol 152mg
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Sodium 414mg
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Total Carbohydrate 48g
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Dietary Fiber 4g
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Protein 16g
* Percent Daily Values are based on a 2,000 calorie diet. Your daily value may be higher or lower depending on your calorie needs.
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