Flan Parisien (Parisian Vanilla Custard Tart)

Quick answer

Total time: 75 min
Level: Medium
Servings: 4 servings
Ingredients: 7

About this dish

Flan Parisien is a Parisian bakery staple found in nearly every boulangerie in the city.

A buttery shortcrust pastry shell holds a thick, firm vanilla custard that bakes slowly until the top develops caramelized brown spots. The custard is made from milk, eggs, sugar, and cornstarch, which gives it a denser, sliceable consistency that distinguishes it from softer baked custards like creme brulee. When properly cooled, the filling holds its shape when cut yet melts smoothly on the tongue with a clean vanilla flavor. Vanilla bean seeds speckled throughout the custard signal that the real ingredient was used rather than extract. The pastry shell must be blind-baked first to prevent sogginess, then filled and baked again until set. It is served cold, and the contrast between the crisp, buttery shell and the cool, trembling custard makes each bite satisfying. Allowing the flan to cool fully at room temperature before refrigerating prevents the custard from cracking or collapsing when sliced, which is the most common mistake when cutting too soon after baking.

Ingredients

servings

IngredientAmountUnit

pastry tart shell1 eaea

milk500 mlml

heavy cream150 mlml

sugar130 gg

eggs3 eaea

cornstarch45 gg

vanilla extract1 tsptsp

Shop All Ingredients

As an Amazon Associate, we may earn from qualifying purchases.

Instructions

Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.

6 steps

1

Heat

Preheat the oven to 190C and press the pastry shell firmly into the pan, especially along the corners.

Blind-bake it first until the base looks dry and lightly set, so the custard moisture does not make the bottom soggy.
2

Control

Put 500 ml milk, 150 ml heavy cream, and 1 teaspoon vanilla extract in a saucepan.

Warm over medium-low heat just until steaming, not boiling, so the dairy takes on the vanilla aroma without scorching.
3

Season

In a bowl, whisk 3 eggs, 130 g sugar, and 45 g cornstarch until no dry lumps remain.

Slowly add the hot milk mixture in several additions while whisking, so the eggs warm gently instead of scrambling.
4

Control

Pour the mixture back into the saucepan and cook over medium-low heat, stirring constantly across the bottom and corners.

Stop as soon as it thickens enough for a spatula trail to stay briefly, before it becomes lumpy.
5

Heat

Pour the thick custard into the blind-baked shell and smooth the surface evenly.

Bake at 190C for 40 to 45 minutes, until the top has caramel-colored spots and the center looks set but still slightly trembling.
6

Prep

Do not slice the flan right after baking.

Let it cool fully at room temperature, then chill for at least 4 hours so the custard firms up and cuts cleanly without collapsing.

Practical Cooking Checks

The cues that matter most while cooking.

Key technique: Parisian vanilla custard tart baked in a pastry shell until the top develops dark spots.
Finish cue: Do not slice the flan right after baking.
Avoid this: Blind-bake it first until the base looks dry and lightly set, so the custard moisture does not make the bottom soggy.
Storage and reheating: Allowing the flan to cool fully at room temperature before refrigerating prevents the custard from cracking or collapsing when sliced, which is the most common mistake when cutting too soon after baking.