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.
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.
03 -
Preheat the oven to 180°C. Bake the pastry for 10 minutes until the surface appears dry.
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.
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.
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.
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.
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.
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.
10 -
Bake at 180°C for 50–60 minutes. The flan should be set around the edges but remain slightly jiggly in the center.
11 -
Let the flan cool to room temperature, then cover and chill in the refrigerator overnight for best texture.
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.