Ingredients
Method
- Preheat your oven to 375°F (190°C). Generously butter a 9x13 inch baking dish.
- Slice the leeks into thin half-moons. Place them in a bowl of cold water and swish them around to remove any hidden dirt. Drain and pat dry. In a large skillet, melt two tablespoons of butter over medium heat. Add the leeks and a pinch of salt. Sauté for about 8 to 10 minutes until they are soft and translucent. Add the minced garlic and cook for another minute until fragrant. Remove from heat.
- In a medium pitcher or bowl, whisk together the heavy cream, fresh thyme, kosher salt, black pepper, and a pinch of nutmeg.
- Arrange one-third of the potato slices in the bottom of your prepared dish. Spread half of the sautéed leek and garlic mixture over the potatoes. Sprinkle with half a cup of the Gruyère cheese. Repeat the layers, ending with a final layer of potatoes on top.
- Carefully pour the cream mixture over the entire Leek and Potato Bake. Press down gently on the potatoes with a spatula.
- Cover the dish tightly with aluminum foil. Place it in the oven and bake for 45 minutes.
- Remove the foil. Sprinkle the remaining Gruyère and Parmesan cheese over the top. Return the dish to the oven, uncovered, for another 20 to 30 minutes.
- Let the Leek and Potato Bake sit for at least 15 minutes before serving.
Notes
Use a mandoline slicer for uniform potato thickness. Wash leeks thoroughly to avoid grit. Use full-fat dairy for best results. Let the dish rest after baking for better texture.
