French Chocolate Flan Tart

Section: Sweet Treats for Any Occasion

This French chocolate flan delivers the best of both worlds: a silky custard center set in a chocolate pastry shell. To achieve that signature creamy texture, cook the custard gently, stirring constantly, then pour into a crisp base for baking. The addition of dark chocolate creates an intense flavor, balanced by smooth cream and milk. A layer of melted jam brushed on top gives the flan an elegant glossy finish. Be sure to allow the finished tart to chill fully before serving for neat slices and the ultimate texture contrast between filling and pastry.

Savor by Sophie official logo
Created By Sophie
Updated on Mon, 17 Nov 2025 20:49:15 GMT
A slice of chocolate cake with chocolate drizzled on top. Save
A slice of chocolate cake with chocolate drizzled on top. | savorbysophie.com

French chocolate flan turns every bite into a rich custard experience with a touch of elegance that reminds me of Parisian bakeries and Sunday afternoons. The creamy chocolate center settled inside a tender cocoa crust always brings people back for seconds and it looks beautiful when sliced — glossy on top and perfectly set in the center.

My first French chocolate flan attempt was a little messy but when everyone tried it I realized perfection was not the goal — just pure chocolate joy.

Ingredients

  • Egg yolks and whole eggs: Help create a creamy custard texture always choose fresh and high-quality eggs
  • White sugar: Adds sweetness and helps the custard set look for fine granulated sugar for smoother blending
  • Cornstarch: Thickens the custard and ensures that special silky feel go for a lump-free powder
  • Salt: Balances the flavors and highlights the chocolate use fine sea salt if possible
  • Whole milk and heavy cream: Offer that essential richness choose fresh dairy for the best results
  • Dark chocolate: Is the star bringing deep cocoa notes a high-cacao-content bar works best for authentic flavor
  • Jam: Is brushed on top for an irresistible glossy finish apricot is traditional but strawberry gives a lovely twist
  • All-purpose flour: Is the foundation of the tart shell always sift it for even texture
  • Icing sugar and cocoa powder: Make the crust tender and chocolatey try to use Dutch-processed cocoa for deep color
  • Butter: Gives the base its melt-in-the-mouth effect use real butter for depth and flavor
  • Vanilla extract: Ties the whole base together always use pure extract not imitation

Instructions

Make the Chocolate Tart Base:
Start by combining all-purpose flour icing sugar cocoa powder and salt in a medium bowl using a whisk to break up any lumps. Melt the butter carefully in the microwave and pour it into the bowl then add the vanilla extract. Using a spatula or your hands mix until it forms a thick smooth dough ensuring all the dry bits are incorporated. Gently knead it on the counter for just three or four turns — you want it to stay tender so do not overwork.
Shape and Bake the Base:
Preheat your oven to 350 degrees Fahrenheit. Press the dough into a large flattened disk slightly bigger than your pastry ring either with your hands or a rolling pin. Do not stress about rough edges since you will trim them later. Place the disk onto a parchment-lined baking sheet and bake for about ten minutes until the surface appears dry and set.
Prepare the Shell for Filling:
Immediately after baking take your pastry ring and press it down over the base like a large cookie cutter. Leave the ring in place — this keeps the edges neat. If using a loose-bottomed cake pan follow pan-specific instructions.
Make the Chocolate Custard:
In a mixing bowl whisk the egg yolks whole eggs and sugar for half a minute until lightly thickened and pale. Add the cornstarch and salt and whisk well until there are no lumps. In a saucepan heat the milk and cream over medium until steaming but not boiling. Slowly pour a little of the hot milk into the egg mixture while whisking constantly to temper the eggs. Gradually add the rest of the milk to avoid any scrambling.
Thicken and Finish the Custard:
Pour the tempered mixture back into your saucepan and reduce the heat to medium-low. Whisk non-stop until the custard starts to bubble thickening enough to coat the back of a spoon. Watch closely as it can thicken quickly at this stage. Cook for another one or two minutes to reach its final thickness. If you spot lumps push the custard through a mesh sieve into a clean bowl.
Add the Chocolate:
Immediately add the chopped dark chocolate to the hot custard. Stir patiently until the chocolate is completely melted and the mixture is uniformly smooth and glossy.
Assemble and Bake the Flan:
Grease the inside of your pastry ring with a touch of butter and pour the warm chocolate custard into the shell. Level the top with a palette knife for a tidy finish. Bake for about 50 to 60 minutes until the edges are just set but the middle still has a gentle wobble. Let it cool to room temperature then wrap in plastic and refrigerate overnight for the perfect slice.
Finish and Serve:
The next day gently run a knife around the edge and lift off the ring. If the flan sticks you can carefully apply a little heat to loosen it. For that classic French shine melt a bit of jam in the microwave and brush it in a thin layer across the top. Slice and admire the beautiful layers before serving.
A slice of chocolate cake with chocolate drizzle.
A slice of chocolate cake with chocolate drizzle. | savorbysophie.com

My favorite part is always the first glossy bite of custard paired with the crumbly cocoa base. One of my sweetest memories of this dessert is making it as a birthday treat where even the failed slices disappeared fast thanks to all that chocolate.

Storage Tips

Keep leftovers tightly wrapped in the refrigerator for up to three days. The flan slices firm up nicely but always use a sharp knife for a clean cut. If you need to keep the crust crisp place flan slices on a paper towel to absorb extra moisture before serving.

Ingredient Substitutions

If you do not have a pastry ring a loose-bottomed cake pan lets you lift the flan out easily. Almond milk or coconut cream work for a dairy-free custard but use the same proportion to keep the texture right. If you run out of apricot jam try orange marmalade or even a thin layer of honey for that signature sheen.

Serving Suggestions

Dust the finished flan with a touch of cocoa powder for extra drama. Pair with berries or a scoop of vanilla ice cream for contrast. A fresh mint sprig or candied orange peel looks beautiful on a dessert platter.

Cultural and Historical Notes

French flan is a classic found in countless bakeries across France though the chocolate version is a more modern twist. Traditionally made with a vanilla custard this chocolate flan reflects how global tastes have shaped French patisserie. Each region puts its own spin on this creamy tart resulting in unique takes from city to countryside.

Seasonal Adaptations

Swap the jam topping with berry preserves in summer. Use spiced chocolate in winter for warmth and depth. Try baking in individual tart pans for a beautiful spring brunch display.

Success Stories

When I served this flan at a family dinner the compliments kept coming even from people who are not normally chocolate fans. The kids love helping brush the jam on top and they were so excited for their perfectly glossy slice. This recipe has truly become a dessert tradition in our home.

Freezer Meal Conversion

While flan is best eaten fresh you can freeze individual slices by wrapping them tightly and storing in an airtight container. To serve thaw overnight in the fridge and gently pat the custard side with a paper towel to remove any condensation.

A slice of chocolate cake with chocolate drizzle.
A slice of chocolate cake with chocolate drizzle. | savorbysophie.com

The first time I tried brushing jam on top I was surprised how much shine and flavor it added — it was worth the little extra effort

Common Recipe Questions

→ How do I get a smooth chocolate custard?

Whisk eggs and sugar thoroughly, gradually temper with warm milk and cream, and strain to remove any lumps. Melt the chocolate gently for a consistent texture.

→ Can I use milk chocolate instead of dark chocolate?

Yes, but the filling will be sweeter and less intense. Adjust sugar if needed to avoid excessive sweetness.

→ Why is jam brushed on top?

A thin layer of melted jam delivers a glossy finish to the tart and adds a subtle fruity note to complement the chocolate.

→ How do I prevent the pastry from getting soggy?

Bake the tart shell fully before adding the custard. This ensures the base remains crisp even after chilling.

→ Can this dessert be made ahead of time?

Absolutely. The tart should chill overnight before serving, making it perfect for preparing a day in advance.

French Chocolate Flan Tart

Smooth chocolate custard in a crisp cocoa tart shell with a hint of jam for a glossy finish.

Preparation Time
45 mins
Time to Cook
50 mins
Overall Time
95 mins
Created By: Sophie

Recipe Type: Desserts

Level of Expertise: Requires Some Skill

Cuisine Style: French

Makes: 4 Portions

Dietary Needs: Plant-Based

Ingredients You’ll Need

→ Chocolate Custard

01 3 egg yolks
02 2 whole eggs
03 200 g white sugar
04 42 g cornstarch
05 0.5 teaspoon salt
06 600 ml whole milk
07 400 ml heavy cream
08 200 g dark chocolate, chopped
09 1 tablespoon jam (for brushing on top)

→ Chocolate Tart Base

10 120 g all-purpose flour
11 35 g icing sugar
12 25 g cocoa powder
13 0.25 teaspoon salt
14 114 g butter, melted
15 0.5 teaspoon vanilla extract

How to Make It

Step 01

In a large bowl, combine flour, icing sugar, cocoa powder, and salt. Melt the butter and add it to the dry mixture along with the vanilla extract. Stir until the dough forms a smooth, thick paste.

Step 02

Gently knead the dough 3 to 4 times, avoiding overworking. Flatten into a large round slightly larger than your pastry ring. Transfer onto a parchment-lined baking sheet.

Step 03

Preheat the oven to 180°C. Bake the pastry for 10 minutes until the surface appears dry.

Step 04

Immediately press the pastry ring into the hot pastry to cut a clean circle, without removing the ring. Leave any excess pastry outside the ring, to be trimmed later.

Step 05

In a bowl, vigorously whisk egg yolks, whole eggs, and sugar for about 30 seconds until slightly lightened. Add cornstarch and salt, whisking until completely smooth.

Step 06

Warm the milk and cream in a saucepan over medium heat until steaming. Gradually whisk a small amount of the hot mixture into the egg base to temper, then slowly incorporate the rest, whisking constantly to prevent curdling.

Step 07

Return the mixture to the saucepan and cook over medium-low heat, whisking continuously until thickened and bubbling. Continue to cook for 1 to 2 minutes more, until the custard coats the back of a spoon.

Step 08

Remove from heat and strain the custard through a fine sieve if needed to ensure smoothness. Add chopped dark chocolate and whisk until fully melted and glossy.

Step 09

Trim excess pastry from the sides of the tart base. Lightly butter the inner surface of the pastry ring. Pour the chocolate custard into the ring, smoothing the surface with a palette knife.

Step 10

Bake at 180°C for 50–60 minutes. The flan should be set around the edges but remain slightly jiggly in the center.

Step 11

Let the flan cool to room temperature, then cover and chill in the refrigerator overnight for best texture.

Step 12

Carefully remove the flan from the pastry ring, using a thin knife if necessary. Warm the jam in the microwave for 20 seconds, then brush in a thin layer over the surface for a glossy finish.

Extra Tips

  1. Using a pastry ring ensures crisp, clean edges but a loose-bottomed cake pan may be substituted if adjusted for fit.
  2. Tempering the eggs prevents curdling and results in a smooth custard.
  3. Allowing the flan to chill fully overnight ensures proper setting and improved flavor development.

Recommended Tools

  • Large mixing bowls
  • Whisk
  • Medium saucepan
  • Pastry ring or loose-bottomed cake pan
  • Baking sheet lined with parchment
  • Palette knife
  • Fine sieve
  • Oven

Allergen Details

Check all the ingredients to avoid allergens, and seek medical advice if you’re unsure.
  • Contains eggs, dairy, wheat (gluten), and may contain traces of nuts from chocolate

Nutritional Info (Per Serving)

These nutrition details are for informational purposes only and shouldn’t replace professional dietary guidance.
  • Calories: 625
  • Fat: 35 g
  • Carbs: 66 g
  • Protein: 10 g