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Blackened Leeks With Asparagus and Boiled Eggs

This vibrant vegetarian dish of blackened leeks with asparagus and boiled eggs turns simple spring vegetables into a sophisticated, flavour-packed meal. By charring the leeks in a hot dry pan, you unlock a deep, smoky sweetness that contrasts beautifully with the bright acidity of the mustard and lemon glaze. It is a wonderful way to celebrate the arrival of British asparagus season with minimal fuss.

Served with jammy, soft-boiled eggs, this recipe makes for a nutritious and light lunch or a stylish starter for a weekend dinner party. The combination of textures—from the tender, buttery leeks to the crisp asparagus and creamy egg yolks—is incredibly satisfying. Enjoy it warm with a slice of crusty sourdough to soak up the zesty pan juices.

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Ingredients for Blackened Leeks With Asparagus and Boiled Eggs

  • 4 large eggs

  • 4 medium leeks, white and pale-green parts only, halved lengthwise

  • 2 tablespoons unsalted butter

  • 1 bunch asparagus, trimmed

  • Kosher salt, freshly ground pepper

  • 1 tablespoon fresh lemon juice

  • 1 tablespoon whole grain mustard

  • Flaky sea salt

Gently lower eggs into a medium pot of boiling water; cook 6 minutes. Transfer eggs to a bowl of ice water and let cool.

Heat a dry large cast-iron skillet over medium-high until smoking hot. Cook leeks, cut side down, pressing to ensure contact with skillet, until blackened, about 5 minutes. Reduce heat to medium; add butter and rotate skillet to evenly coat leeks. Transfer leeks to a platter with a slotted spoon.

Add asparagus to skillet, season with kosher salt and pepper, and cook, tossing occasionally, until bright green and crisp-tender, about 4 minutes. Remove from heat, add lemon juice and mustard, and toss asparagus to coat. Transfer to platter with leeks and spoon sauce over.

Peel eggs, halve, and place on top of vegetables. Top with sea salt.

Disclaimer

While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.

Article history

The information on this page is peer reviewed by qualified clinicians.

  • 28 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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