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Spring Greens and Leek Gratin

This vibrant spring greens and leek gratin is a wonderful way to celebrate seasonal produce. Combining the peppery bite of mature rocket with silky spinach and sweet, softened leeks, the dish is brought together in a rich, lemon-scented cream sauce. The addition of wild garlic or garlic cloves provides a deep, savoury base that complements the earthy notes of the ground coriander and a subtle hint of cayenne heat.

As a versatile vegetarian dish, this gratin works beautifully as a comforting main course served with a crisp green salad or as an indulgent side for a Sunday roast. The topping of olive oil-coated bread provides a satisfyingly crunchy texture that contrasts perfectly with the tender greens beneath. It is a simple yet sophisticated bake, ideal for sharing with friends during the brighter spring months.

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Ingredients for Spring Greens and Leek Gratin

  • 3 tablespoons unsalted butter

  • 2 large leeks (about 230g ), white and light green parts only, thinly sliced

  • 1 bunch ramps, bulbs thinly sliced, greens coarsely chopped (or 3 large garlic cloves, thinly sliced)

  • 2 large bunches mature rocket, coarsely chopped

  • 1 bunch mature spinach, coarsely chopped

  • 2 teaspoons ground coriander

  • 1 teaspoon kosher salt

  • Pinch of cayenne pepper

  • Finely grated zest of 1/2 lemon

  • 350ml double cream

  • 120ml plus 2 tablespoons finely grated Parmesan

  • 3/4 loaf crusty bread, crusts removed, torn into irregular 1/2" pieces (about 725ml torn bread)

  • 2 tablespoons extra-virgin olive oil

Preheat oven to 177°C. Melt butter in an ovenproof 10" skillet (such as cast iron) over medium-low heat. Add leeks and ramp bulbs and cook, stirring often, until leeks are softened, about 10 minutes. (Try to keep the leeks from browning.)

Add ramp greens, rocket, and spinach in big handfuls, cooking and wilting one batch before adding the next. (At first it will look like all those greens will never fit in the skillet, but keep at it—you’ll see!) When all greens are wilted (this may take 15–20 minutes), add coriander, salt, and cayenne. Cook, stirring, until spices are incorporated, about 1 minute. Add lemon zest, cream, and 120ml Parmesan. Continue to cook, stirring, until cream has slightly reduced, about 2 minutes longer. Remove from heat.

Toss bread with oil in a large bowl to coat. Arrange bread on top of vegetables, taking care not to cover the greens completely (you want them to peek through here and there). Sprinkle remaining 2 tablespoons Parmesan over.

Transfer to oven and bake gratin until bread is golden brown and crisp, cheese is melted, and cream is bubbling, 35–45 minutes. Let cool slightly before serving.

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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