Chocolate Tart with Ganache Center

Steps

1. 1

   Make the tart dough

   • In a large bowl, combine the flour, sugar, and salt for the crust.
   • Add the cold butter cubes and use your fingertips to rub them into the flour until the mixture resembles coarse breadcrumbs with pea-sized pieces of butter visible.
   • In a small bowl, whisk together the egg yolk and ice water.
   • Add the wet ingredients to the flour mixture and stir gently with a wooden spoon until the dough just comes together.
   • Form the dough into a flat disk, wrap it in plastic wrap, and refrigerate for at least 30 minutes.

   + Show details− Hide details

   Ready when: Dough holds together when pressed and is cool to the touch

   Tip: Don't overwork the dough—a few visible butter pieces ensure a flaky crust. Ice water keeps the butter from softening.

2. 2

   Line the tart pan

   • Remove the dough from the fridge and let it sit at room temperature for 5 minutes to soften slightly.
   • On a lightly floured surface, roll it out to a ⅛-inch (3 mm) thickness, rotating the dough every few rolls to keep it even.
   • Transfer the dough to the 9-inch (23 cm) tart pan, pressing it gently into the bottom and sides.
   • Trim the excess dough flush with the top edge.
   • Prick the bottom all over with a fork.

   + Show details− Hide details

   Ready when: Dough is evenly fitted in the pan with no thick spots or air pockets

   Tip: Let the dough warm just slightly before rolling—it's easier to work with and less likely to crack. Work quickly so it doesn't get too warm.

3. 3

   Blind bake the crustOven 375°F / 190°C

   • Preheat the oven to 375°F (190°C) and position the rack in the lower third.
   • Line the dough-filled tart pan with parchment paper and fill it with pie weights or dried beans.
   • Bake for 15 minutes, then carefully remove the weights and parchment.
   • Return to the oven for another 5–7 minutes until the bottom is pale golden and dry to the touch.
   • Remove from the oven and let cool slightly in the pan while you prepare the filling.

   + Show details− Hide details

   Ready when: Crust is pale golden, dry on the bottom, and set but not deeply colored

   Tip: Blind baking prevents a soggy bottom. Keep the oven temperature steady and don't skip the second bake—the bottom must be fully dry.

4. 4

   Prepare the chocolate filling

   • While the crust bakes, combine the chopped dark chocolate and room-temperature butter in a small bowl set over a saucepan of gently simmering water (a double boiler).
   • Stir occasionally until both are completely melted and smooth, about 3–4 minutes.
   • Remove from the heat and let cool for 2 minutes.

   + Show details− Hide details

   Ready when: Chocolate and butter are fully melted and combined into a smooth mixture

   Tip: Keep the water below a simmer—too-hot water can cause chocolate to seize. Stir gently to avoid incorporating air.

5. 5

   Whisk eggs and sugar

   • In a large bowl, whisk together the room-temperature eggs and granulated sugar.
   • Whisk continuously for 2–3 minutes until the mixture is pale, slightly thickened, and reaches about 85°F (29°C)—this helps emulsify the filling and gives it a silky texture.
   • Add the salt and vanilla extract and whisk for another 30 seconds.

   + Show details− Hide details

   Ready when: Mixture is pale yellow, noticeably thicker, and warm to the touch

   Tip: Room-temperature eggs whisk more evenly and incorporate better. Whisking over gentle heat (if needed) warms them slightly, improving texture.

6. 6

   Combine filling ingredients

   • Pour the melted chocolate-butter mixture into the egg mixture and fold gently with a rubber spatula, turning the bowl as you fold, until no streaks of chocolate remain.
   • Work quickly but carefully to avoid deflating the eggs.
   • The filling should be smooth and slightly mousse-like.

   + Show details− Hide details

   Ready when: Filling is uniformly chocolate-colored with no white streaks or lumps

   Tip: Folding instead of stirring keeps air in the filling, which creates a lighter, more delicate texture. Don't overmix.

7. 7

   Fill and bake the tartOven 375°F / 190°C

   • Pour the chocolate filling into the partially baked tart shell, spreading it evenly with a spatula.
   • Place the tart on a baking sheet and bake in the 375°F (190°C) oven for 12–15 minutes.
   • The filling should jiggle slightly when gently shaken—it will continue to set as it cools.
   • The internal temperature at the center should be around 155–160°F (68–71°C).

   + Show details− Hide details

   Ready when: Filling jiggles just slightly at the center; edges are set and don't wobble

   Tip: Don't overbake—the filling continues to set as it cools. A little jiggle in the center ensures a creamy, not dry, result.

8. 8

   Cool the tart

   • Remove the tart from the oven and place it on a cooling rack still in its pan.
   • Allow it to cool to room temperature, about 1 hour, then transfer it to the refrigerator for at least 1 hour until the filling is completely chilled and set.
   • The tart can be made up to this point 1 day ahead.

   + Show details− Hide details

   Ready when: Filling is cool to the touch and holds its shape when the pan is gently tilted

   Tip: Chilling the tart before adding ganache ensures the ganache sets evenly on top and looks glossy.

9. 9

   Make the ganache

   • Place the chopped dark chocolate in a small bowl.
   • Heat the heavy cream in a small saucepan over medium heat until it just begins to steam and small bubbles form around the edges, about 1–2 minutes.
   • Pour the hot cream over the chocolate and let it sit for 30 seconds.
   • Add the butter and stir gently with a whisk until the chocolate is completely melted and the ganache is smooth and glossy.

   + Show details− Hide details

   Ready when: Ganache is uniformly dark, smooth, and glossy with no lumps

   Tip: Don't boil the cream—steam is enough to melt the chocolate evenly. Let the residual heat do the work; it's gentler than direct contact.

10. 10

    Top with ganache and set

    • Let the ganache cool for 2–3 minutes until it reaches about 90°F (32°C) and has thickened just slightly but is still pourable.
    • Pour it onto the center of the chilled tart and use an offset spatula or the back of a spoon to spread it in a thin, even layer all the way to the edges.
    • Transfer the tart to the refrigerator for 30–45 minutes until the ganache is set and firm to the touch.

    + Show details− Hide details

    Ready when: Ganache is no longer glossy and is firm when gently pressed with your finger

    Tip: If the ganache cools too much and becomes thick or lumpy, gently reheat it for 10–15 seconds. Aim for a pourable but thick consistency.

11. 11

    Finish and serve

    • Remove the tart from the refrigerator 10–15 minutes before serving to bring it to a cool room temperature, which enhances the flavor and makes slicing cleaner.
    • Run a thin, warm knife around the inside edge of the pan to loosen it, then push up on the bottom to release the tart.
    • Transfer to a serving plate.
    • Wipe the knife between each slice and serve on chilled plates.

    + Show details− Hide details

    Ready when: Tart releases cleanly from the pan and slices without cracking or tearing

    Tip: Warming the knife between slices gives you clean edges. Serving chilled plates keeps the tart firm longer and enhances the chocolate flavor.