
Leeks are one of those vegetables that transform completely in a hot oven — their sharp, oniony bite mellows into something sweet, silky, and deeply savory. Roasting them cut-side down first builds a gorgeous caramelized crust, and that final flip lets the edges turn golden while the layers go completely tender. A squeeze of fresh lemon and a drizzle of good olive oil at the end keep things bright and balanced. The whole dish comes together with just a handful of pantry staples, all of them naturally free of gluten, so there's no label-reading or substitution stress involved. It works beautifully as a side next to roasted chicken or fish, but honestly it's impressive enough to anchor a vegetable-forward spread on its own. A scatter of fresh parsley adds a little color and freshness if you want to dress it up for company.
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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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