Sweat the leeks low and slow in butter until they collapse soft, with no color at all. Any browning or leftover crunch throws off the delicate sweetness against the custard.
By Vince Gonzalez · Published July 2026 · Sourcing verified 5 Jul 2026
Prep25 min
Cook40 min
Makes6 servings
CuisineFrench
Cost$$
Vegetarian
Contains dairy · eggs · gluten
Make it vegan: use plant milk, oil, or a vegan cheese for the dairy, and a flax or aquafaba egg for the egg.
Make it gluten-free: swap in gluten-free versions of the wheat items (check the other labels too).
The Ingredients — and where to get them
Cook for6servings
Puff pastry
An all-butter puff, rolled thin into a tart tin. It should bake shatter-crisp.
Can you make Flamiche aux Poireaux in an air fryer? — Yes, with an insert
Not on its own — an air fryer can’t hold a pool of liquid. You can simmer it in an oven-safe dish or a silicone insert made to fit the basket, but the broth won’t reduce or brown the way it does on the stove, and that insert comes out scorching, so use oven mitts. For real depth, a pot on the stove wins.
Can you freeze Flamiche aux Poireaux? — Not ideal
Not really — the cream, custard, or emulsion turns grainy or splits once thawed. This one is best kept fresh in the fridge.
Can you make Flamiche aux Poireaux ahead of time? — Yes
Yes — it holds well and often tastes better the next day. Make it ahead and reheat gently before serving.
Is Flamiche aux Poireaux gluten-free? — Not as written
Not as written — it contains gluten. Make it gluten-free: swap in gluten-free versions of the wheat items (check the other labels too).
Is Flamiche aux Poireaux vegan? — Vegetarian, not vegan
It’s vegetarian but not vegan as written — it has dairy and egg. Make it vegan: use plant milk, oil, or a vegan cheese for the dairy, and a flax or aquafaba egg for the egg.
Community Notes
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