Tarte au chocolat super onctueuse 🍫🍫🍫
Tarte au chocolat super onctueuse 🍫🍫🍫 is a medium French recipe that serves 8. 450 calories per serving. Recipe by Il était une fois la pâtisserie on YouTube.
Prep: 8 hrs 10 min | Cook: 20 min | Total: 8 hrs 50 min
Cost: $16.60 total, $2.08 per serving
Ingredients
- 300 g Dark Chocolate (70% cocoa) (chopped into small pieces)
- 300 ml Heavy Cream (divided: 200 ml for ganache, 100 ml for final mixing)
- 2 Gelatin Sheets (softened in cold water, then squeezed)
- 2 Tbsp Cold Water (for softening gelatin)
- 150 g Hazelnut Flour (finely ground, gives nutty flavor)
- 100 g All‑Purpose Flour (helps bind the crust)
- 120 g Unsalted Butter (cold, cut into cubes)
- 130 g Granulated Sugar (50 g for crust, 80 g for filling)
- 5 Egg Yolks (4 for filling, 1 for crust (optional, helps bind))
- 200 ml Whole Milk (for chocolate custard filling)
- 1 Tbsp Unsweetened Cocoa Powder (for dusting, optional)
- 1 Tbsp Butter (for greasing) (softened, to butter tart pan)
Instructions
Soften Gelatin
Place the gelatin sheets in a small bowl with 2 Tbsp cold water. Let sit for 5 minutes until softened, then gently squeeze out excess water.
Time: PT5M
Heat Cream for Ganache
In a saucepan, heat 200 ml of heavy cream over medium heat until it just begins to simmer (about 85 °C). Remove from heat.
Time: PT5M
Temperature: 85°C
Incorporate Gelatin
Stir the squeezed gelatin into the hot cream until fully dissolved.
Time: PT2M
Melt Chocolate
Add the chopped dark chocolate to the cream‑gelatin mixture. Let sit a few seconds, then stir gently until the chocolate is completely melted.
Time: PT3M
Finish Ganache Base
Stir in the remaining 100 ml of heavy cream until the ganache is homogeneous. Transfer to a shallow container, cover, and chill for at least 4 hours (overnight is best).
Time: PT4H
Whip Ganache
Remove the chilled ganache from the fridge. Using a whisk or hand mixer, start on low speed and gradually increase to medium‑high, whipping until the ganache thickens but is still soft enough to spread.
Time: PT5M
Prepare Crust Ingredients
In the food processor bowl, combine hazelnut flour, all‑purpose flour, sugar, and a pinch of salt. Pulse briefly.
Time: PT2M
Add Butter and Form Dough
Add cold cubed butter to the flour mixture. Pulse until the mixture resembles coarse crumbs. Add 1 egg yolk (optional) and pulse just until the dough comes together into a ball.
Time: PT8M
Chill Crust Dough
Flatten the dough into a disc, wrap in plastic, and refrigerate for 1 hour.
Time: PT1H
Roll Out Crust
On a lightly floured surface, roll the dough to a uniform 3 mm thickness. Cut a 22 cm round for the base and cut a 3 mm‑thick strip to line the edge of the tart pan.
Time: PT10M
Chill Shaped Crust
Place the crust pieces on parchment paper, cover, and refrigerate for another 1 hour.
Time: PT1H
Prepare Chocolate Custard Filling
In a saucepan, combine 200 ml whole milk, 100 ml heavy cream, and 80 g sugar. Heat gently until just simmering. Remove from heat and pour over the remaining 200 g chopped dark chocolate. Let sit a few seconds, then stir until smooth.
Time: PT5M
Temperature: 85°C
Add Egg Yolks to Filling
Temper the 4 egg yolks by whisking a small amount of the warm chocolate mixture into them, then fold the yolk mixture back into the full chocolate custard. Mix until fully incorporated.
Time: PT5M
Chill Filling
Cover the custard filling and refrigerate for 1 hour (or overnight).
Time: PT1H
Blind‑Bake Tart Shell
Preheat the oven to 180 °C. Butter the tart pan, line the base with parchment paper, and fill with baking beans. Dock the base with a fork. Bake for 15 minutes until lightly golden.
Time: PT15M
Temperature: 180°C
Add Custard Filling
Remove the blind‑baked shell, discard the beans and parchment, and pour the chilled chocolate custard filling into the crust, smoothing the top.
Time: PT5M
Second Bake
Return the tart to the oven and bake for an additional 5 minutes to set the filling.
Time: PT5M
Temperature: 180°C
Cool Slightly
Remove the tart from the oven and let it cool on a rack for about 15 minutes.
Time: PT15M
Spread Ganache Topping
Evenly spread the whipped ganache over the cooled tart surface using a spatula.
Time: PT5M
Final Chill and Serve
Place the finished tart in the freezer for at least 2 hours until the ganache is firm enough to unmold. Dust with unsweetened cocoa powder (optional) and serve.
Time: PT2H
Nutrition Facts
- Calories
- 450
- Protein
- 5 g
- Carbohydrates
- 40 g
- Fat
- 30 g
- Fiber
- 3 g
Dietary info: Vegetarian, Contains dairy, Contains nuts, Contains gluten
Allergens: Milk, Eggs, Hazelnuts, Gluten
Last updated: April 7, 2026






