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Belgian Leek Tart with Aged Goat Cheese (Flamiche Aux Poireaux)

This authentic flamiche aux poireaux is a sophisticated Belgian leek tart that celebrates simple, high-quality ingredients. This vegetarian dish features a short, buttery pastry crust filled with a silky mixture of slow-cooked leek confit and tangy aged goat’s cheese. The custard base, enriched with double cream and egg yolks, creates a melt-in-the-mouth texture that perfectly balances the savoury sweetness of the caramelised leeks.

Ideal for a weekend lunch or a seasonal dinner party, this homemade tart can be prepared in stages to save time. The pastry benefits from a long chill in the fridge, making it easier to handle and ensuring a crisp, golden finish. Serve it warm with a crisp green salad and a sharp vinaigrette to cut through the richness of the cheese and cream.

Continue reading below

Ingredients for Belgian Leek Tart with Aged Goat Cheese (Flamiche Aux Poireaux)

  • 60ml (or more) ice water

  • 3/4 teaspoons apple cider vinegar

  • 350ml unbleached plain flour

  • 3/4 teaspoons salt

  • 80g (1 stick) plus 1 tablespoon chilled unsalted butter

  • 120ml whole milk

  • 120ml double cream

  • 1 large egg

  • 1 large egg yolk

  • 1/4 teaspoons salt

  • 60g crumbled aged goat cheese (such as Bûcheron), rind trimmed

  • 350ml Leek Confit

How to make Belgian Leek Tart with Aged Goat Cheese (Flamiche Aux Poireaux)

Combine 60ml ice water and cider vinegar in small bowl. Blend flour and salt in processor. Add butter and cut in using on/off turns until mixture resembles coarse meal. With machine running, slowly add water-vinegar mixture, processing until moist clumps form. If dough seems dry, add ice water by teaspoonfuls.

Gather dough into ball; flatten into disk. Wrap in plastic and refrigerate at least 2 hours. DO AHEAD: Can be made 3 days ahead. Keep refrigerated. Allow dough to soften slightly at room temperature before rolling out.

Position rack in centre of oven and preheat to 191°C. Roll dough out on lightly floured work surface to 12-inch round. Transfer to 9-inch-diameter tart pan with removable bottom. Press dough onto bottom and up sides. Fold in overhang and press to extend dough 1/2 inch above sides of pan. Line pan with foil and dried beans or pie weights. Bake until dough looks dry and set, about 30 minutes. Remove foil and beans and continue to bake until crust is pale golden, 20 to 25 minutes longer. Remove from oven and cool while preparing filling.

Whisk milk, cream, egg, egg yolk, and salt in medium bowl to blend. Sprinkle 30g cheese over bottom of warm crust; spread leek confit over and sprinkle with remaining cheese. Pour milk mixture over. Bake until filling has puffed, is golden in spots, and centre looks set, 35 to 40 minutes. Transfer to rack; cool slightly. Remove pan sides. Serve warm or at room temperature.

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.

  • 16 Jan 2026 | Originally published

    Authored by:

    UK recipe editors

    Peer reviewed by

    UK recipe editors
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