Parisian Chocolate Custard Tart

parisian-choc-tart

This French chocolate flan is what happens when silky custard and crisp chocolate pastry decide to have a very glamorous meeting in Paris.

You get a rich, velvety chocolate filling — made with eggs, milk, cream and proper dark chocolate — baked just until set so it slices cleanly but still melts on the tongue. Underneath? A crisp chocolate tart base that adds that perfect little snap before the smooth custard takes over. Texture heaven.

It looks elegant. It tastes luxurious. And the best part? It’s far easier to make than it appears — which makes it the ultimate secret weapon dessert. Fancy enough for dinner parties, romantic enough for date night, and absolutely welcome at a casual “I just felt like baking something fabulous” gathering.

Serve it chilled, slice it neatly, and watch people go quiet after the first bite. That’s when you know you’ve nailed it.

Prepare

45 mins

Cook

50 mins

Serving

4 people

Ingredients

For the Silky Chocolate Custard

• 3 egg yolks (for richness)
• 2 whole eggs (for structure and that perfect set)
• 1 cup (200g) white sugar
• ⅓ cup (42g) cornstarch (your secret weapon for that flawless slice)
• ½ teaspoon salt (just enough to sharpen the chocolate)
• 2 ½ cups (600ml) whole milk
• 1 ¾ cups (400ml) heavy cream (because we’re not doing light and virtuous here)
• 7 oz (200g) dark chocolate, finely chopped — go for something bold and beautiful
• 1 tablespoon jam, for brushing on top (that glossy, pâtisserie-style finish)


For the Crisp Chocolate Tart Base

• 1 cup (120g) all-purpose flour
• ⅓ cup (35g) icing sugar (for that delicate sweetness)
• ¼ cup (25g) cocoa powder (deep, dark, and dramatic)
• ¼ teaspoon salt
• 1 stick (114g) butter, melted and ready to bind everything together
• ½ teaspoon vanilla extract

Simple ingredients. Serious elegance. This is the kind of dessert that makes people assume you trained in France — no need to correct them.

Method

Alright. Aprons on. Channel your inner Parisian pastry chef — calm, precise, slightly dramatic.


Make the Chocolate Tart Base

Start by whisking together the flour, icing sugar, cocoa powder and salt in a bowl. It should look like edible velvet dust.

Preheat your oven to 350°F (180°C) and line a baking sheet with parchment paper.

Melt the butter (quick microwave moment), then pour it into the dry ingredients along with the vanilla. Stir until everything comes together into a smooth, thick paste — rich, dark, and slightly glossy.

Turn it out and knead gently just 3–4 times. This isn’t bread; we’re not building gluten strength. Be kind to it.

Press or roll the dough into a large circle, slightly bigger than your pastry ring. Rustic edges are absolutely fine — they’ll be trimmed later. Slide it into the oven and bake for about 10 minutes, until the surface looks dry and set.

While it’s still warm, press your pastry ring firmly into the baked base like a giant cookie cutter. Leave the ring in place — this becomes your mould.
(Using a loose-bottomed cake tin? Same idea, just adjust to fit your pan.)

Let it cool completely.


Make the Chocolate Custard

In a bowl, whisk together the egg yolks, whole eggs and sugar for about 30 seconds. It should lighten slightly and look smooth.

Whisk in the cornstarch and salt until completely lump-free.

In a saucepan, heat the milk and cream over medium heat. Once you see steam rising (but before it boils), begin tempering: slowly pour a small amount of the hot milk into the egg mixture, whisking constantly. Keep adding gradually, whisking all the while. Slow and steady prevents scrambled eggs — and we do not want scrambled eggs.

Once combined, pour everything back into the saucepan. Cook over medium-low heat, whisking continuously. When it begins to bubble, keep going for another 1–2 minutes until thickened.

You’ll know it’s ready when it coats the back of a spoon and a clean line remains when you drag your finger through it. That’s pastry chef gold.

Remove from heat. If needed, strain through a sieve for ultimate smoothness.

Add the chopped dark chocolate and whisk until fully melted and glossy. It should look luxurious enough to make you pause for a second.


Assemble the Chocolate Flan

Your pastry ring should still be sitting on the cooled base. Trim away any excess pastry from around the edges.

Lightly butter the inside of the ring.

Pour in the chocolate custard and smooth the top with a palette knife (or the back of a spoon if you’re improvising).

Bake for 50–60 minutes. The edges should be set, but the centre should still have a gentle wobble — that slight jiggle is perfect.

Let it cool to room temperature, then cover and refrigerate overnight. This rest is essential. Patience pays off.


Finishing Touches

Once fully chilled, carefully remove the pastry ring. If it resists, run a sharp knife around the edge or warm the outside of the ring slightly to help release it.

For that classic glossy pâtisserie finish, microwave 1 tablespoon of jam for about 20 seconds until fluid, then brush a thin layer over the top.
Apricot is traditional. Strawberry adds a subtle berry note. Either way? Très chic.

Slice cleanly. Serve confidently. Accept the compliments gracefully.

Helpful Tips

• Make sure your milk and cream are properly hot — steaming, but not boiling — before you start tempering the eggs. Warm enough to blend smoothly, not so wild that you scramble your custard. Slow pouring + constant whisking = silky success.

• If your flan cracks during baking, your oven may be running a little too fierce. Next time, dial the temperature down slightly and let it bake a touch more gently. This dessert prefers elegance over aggression.

• And whatever you do, don’t overbake it. The centre should still have a soft, confident wobble when you take it out — that gentle jiggle is exactly what you want. It will finish setting as it cools, giving you that perfectly smooth, creamy slice.

Think calm heat. Patience. And trust the wobble.


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