Cauliflower Gratin

Ingredients:
Yield: 4 to 6 servings
1 head cauliflower (about 2pounds), green leaves removed
Olive oil, for drizzling
1 small leek, white and light green part only, very thinly sliced
Kosher salt and black pepper
¾ cup heavy cream
6 ounces sharp white Cheddar, grated (about 1½ cups)

Preparation:
Step 1: Heat oven to 425 degrees. Slice cauliflower head lengthwise into ½-inch thick slices, including the core and leaves.
Step 2: Drizzle some olive oil onto the bottom of a 2-quart baking dish. (An oval, square, or rectangular dish will all work.) Layer about a third of the cauliflower along the bottom, and about a third of the leeks. Season with salt and pepper, and repeat until all of the cauliflower and leeks are used. (Don’t worry about perfectly layering them.) Season with salt and pepper and drizzle cream over. Scatter cheese on top, and season again with salt and pepper. Lightly cover with foil and place in the oven.
Step 3: Bake until cauliflower is nearly tender, 10 to 15 minutes. Remove foil and continue to bake until cream has thickened and reduced nearly completely and the top is golden brown and crisp, 35 to 40 minutes. Remove from oven and let cool slightly before eating.