Potato & Celery Root Gratin with Leeks

Ingredients for Potato & Celery Root Gratin with Leeks

• 725ml double cream

• 2 dientes de ajo, pelados

• 1 sprig thyme plus 3 teaspoons fresh thyme leaves, divided

• 2 tablespoons (1/4 stick) unsalted butter, divided

• 3 leeks, white and pale-green parts only, halved lengthwise, thinly sliced crosswise

• Sal kosher

• 900g russet potatoes, peeled, very thinly sliced crosswise (1/8" thick)

• 450g celery root, peeled, very thinly sliced crosswise (1/8" thick)

• 300g grated Gruyère

• Pimienta negra recién molida

Preheat oven to 177°C. Heat cream, garlic, and thyme sprig in a medium saucepan just until bubbles begin to form around edge of pan. Remove from heat; set aside to steep.

Melt 1 tablespoon butter in a medium skillet over medium heat. Add leeks; season with salt and cook, stirring often, until tender (do not brown), 10-12 minutes. Transfer to a small bowl and set aside.

Butter a 3-quart gratin dish with remaining 1 tablespoon butter. Layer 1/3 of potato slices and 1/3 of celery root slices evenly over bottom of baking dish. Cover with 1/3 of leeks, then 1/3 of Gruyère. Sprinkle with salt, pepper, and 1 teaspoon thyme leaves. Repeat layers twice more. Strain cream mixture into a medium pitcher and pour over vegetables.

Set gratin dish on a large rimmed baking sheet and cover tightly with foil. Bake for 1 hour. Carefully remove foil; continue baking until top is golden brown and sauce is bubbling, 25-30 minutes. DO AHEAD: Can be made 2 hours ahead. Let stand at room temperature. Tent with foil and rewarm in a 300° oven until hot, about 20 minutes.

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Si bien se ha hecho todo lo posible para garantizar que la información sea precisa y esté actualizada, las necesidades individuales pueden variar y los requisitos dietéticos pueden diferir según las condiciones de salud personales. Siempre revise las etiquetas de los alimentos y la información sobre alérgenos antes de preparar o consumir cualquier receta. Si tiene preocupaciones específicas de salud, alergias, intolerancias o sigue una dieta prescrita médicamente, busque el consejo de su médico de cabecera, farmacéutico o un dietista registrado antes de realizar cambios significativos en su dieta o estilo de vida.