Categories: Sides
Ingredients
- Unsalted butter, softened, for the baking dish
- 1/2 large celery root
- 6 tbsp olive oil
- 1 lb red bliss potatoes
- 1 large Bartlett pear
- Sea salt and ground pepper
- 3/4 cup heavy cream
- 1 garlic clove, smashed
- 1 cup grated gruyere cheese
- 2/3 cup grated Parmesan
- 1 tsp chopped thyme
Directions
-
Preheat oven to 375. Lightly butter a shallow 2-quart baking dish.
-
Line a baking sheet with paper towels. Peel the celery root, the quarter and slice 1/4 inch thick. Heat 2 tbsp olive oil in a large skillet over medium heat. Working in batches, add the celery root to the skillet in a single layer and cook, turning, until browned, about 10 minutes per batch. Remove with a slotted spoon and drain on the paper towels.
-
Meanwhile, peel the potatoes and slice 1/4 inch thick. Add another 2 tbsp olive oil to the skillet. Working in batches, add the potatoes in a single layer and cook, turning, until browned and tender, about 10 minutes per batch. Remove with a slotted spoon and drain on the paper towels with the celery root.
-
Peel the pear, core and slice 1/4 inch thick. Add the remaining 2 tbsp olive oil to the skillet. Add the pear in a single layer and cook, turning, until browned, about 10 minutes; transfer to the paper towels. Lightly season the celery root, potatoes and pear with salt and pepper.
-
Heat the cream and garlic in a saucepan over medium-high heat until just simmering; remove from the heat. Combine the gruyere, parmesan, thyme and 1 tsp each salt and pepper in a bowl.
-
Spread the celery root in the prepared baking dish. Sprinkle one-third of the cheese mixture on top. Remove the garlic from the cream, then pour one-quarter of the cream over the cheese. Layer the potatoes on top, then sprinkle with another one-third of the cheese mixture; pour another one-quarter of the cream on top. Top with the pear slices and sprinkle with the remaining cheese mixture. Pour the remaining cream over everything.
-
Cover the dish with foil and bake 30 minutes, then uncover and bake until the gratin is bubbly and browned, 5-10 minutes more. Let cool 15 minutes before serving.