
Leeks are one of those vegetables that transform completely under high heat — what starts out mild and a little grassy becomes sweet, silky, and deeply caramelized at the edges. This roasted preparation keeps things beautifully simple, relying on good olive oil, a hit of lemon, and a long stay in a hot oven to do all the heavy lifting. The cut-side-down roasting technique is the real secret here, building that golden, slightly crispy surface before flipping to finish the layers through. A squeeze of fresh lemon at the end cuts through the richness and brightens everything up in the best way. For anyone avoiding warming spices like nutmeg — which can sneak into all kinds of vegetable gratins and creamy side dishes — this recipe is a clean, confident alternative with zero compromise on flavor. Scatter some fresh parsley over the top and you've got a side dish that looks like it came from a restaurant kitchen but took almost no effort at all.
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Preheat the oven to 425°F (220°C). Line a large baking sheet with parchment paper.
Trim the root ends and dark-green tops from the leeks, leaving only the white and light-green parts. Halve each leek lengthwise, then rinse under cold running water, fanning the layers to remove any grit. Pat thoroughly dry with paper towels.
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