Chocolate ganache tart

This chocolate ganache tart is for true chocolate lovers: a crisp, tender cocoa crust cradling a silky layer of ganache (a mix of chocolate and heavy cream). The filling doesn't need baking; just chill it until the ganache sets and you can cut clean, sharp slices. A sprinkle of sea salt on top makes the chocolate taste even deeper and rounder.

Difficulty
Medium
Prep
40 min
Cook
28 min
Rising or chilling
3 hr 20 min
Total time
4 hr 28 min
Method
Oven-baked
Chocolate ganache tart

Ingredients

For the cocoa tart crust

For the ganache filling

For garnish

Instructions

  1. Step 1

    Sift 180 g all-purpose flour, 20 g cocoa powder, 60 g powdered sugar and a pinch salt into a bowl, add 110 g cold diced unsalted butter and quickly rub it in with your fingertips, then add 36 g egg yolks and bring the dough together with a spatula. Butter that stays cold creates tiny pockets that make the crust crisp and tender rather than hard. The dough is ready when it just comes together, smooth and dark brown with no large streaks of butter.

  2. Step 2

    Press the dough into a flat disc about two centimeters thick, wrap it in plastic wrap and refrigerate for about an hour. A good rest relaxes the gluten and firms up the butter, so the crust shrinks less in the oven. The dough is ready when it's firm but still gives slightly when pressed.

    Suggested time: about 60 minutes.

  3. Step 3

    Roll the dough between two sheets of parchment paper into a round about three millimeters thick and about four centimeters wider than the tart pan, lay it in the pan, press it into the bottom and sides, then roll the rolling pin over the rim to trim off the excess. Rolling between parchment means you don't need extra dusting flour, which would leave pale patches on the crust. This step is done when the crust fits the pan snugly, is evenly thick and has a neat edge.

  4. Step 4

    Prick the bottom of the crust all over with a fork, then put the whole pan in the freezer for about 20 minutes while you preheat the oven to 180°C. A hard, chilled crust keeps its sides upright in the heat. The shell is ready when it feels as hard as cardboard.

    Suggested time: about 20 minutes.

  5. Step 5

    Line the tart shell with a sheet of parchment paper, fill it with pie weights or rice and bake at 180°C for about 15 to 18 minutes. The weights hold down the bottom so it doesn't puff up and keep the sides from slipping down. Move on to the next step when the edge of the crust is dry and no longer shiny with butter.

    Bake at 180°C for about 15 to 18 minutes.

  6. Step 6

    Lift out the parchment and weights, bake the bare shell at 180°C for another 8 to 10 minutes, then let it cool completely. A cocoa crust burns easily and is hard to judge by color, so rely on smell and dryness instead. The shell is done when the bottom is dry, feels firm and smells of toasted cocoa.

    Bake at 180°C for about 8 to 10 minutes.

  7. Step 7

    Chop 250 g dark chocolate and put it in a bowl, heat 250 g heavy cream with 15 g honey over medium heat until it's just bubbling at the edges, pour it over the chocolate, wait two minutes, then stir from the center outward and finally add 30 g softened unsalted butter. Stirring from the center creates a smooth emulsion, while the honey and butter give the ganache a beautiful shine. The ganache is ready when it's uniform, mirror-glossy and falls from the whisk in a silky ribbon.

    Medium heat.

  8. Step 8

    Pour the ganache into the cooled tart shell, tilt the pan gently to level the surface, pop any air bubbles with a toothpick, then chill for at least two hours. The ganache needs time in the cold to crystallize, which is what gives clean slices that don't run. The tart is ready when the surface of the ganache turns slightly matte and is no longer sticky to the touch.

    Suggested time: about 120 minutes.

  9. Step 9

    Take the tart out of the fridge about fifteen minutes before serving, sprinkle a pinch flaky sea salt on top, then cut it with a knife dipped in hot water and wiped dry after each slice. A warm knife melts the ganache slightly as it glides through, so the cut is smooth and flat. The tart is ready when each slice clearly shows the two layers of crust and filling and the filling looks glossy and smooth.

Equipment

  • Oven
  • Tart pan
  • Rolling pin
  • Mixing bowl
  • Sieve
  • Small saucepan
  • Spatula
  • Parchment paper
  • Plastic wrap
  • Kitchen scale
  • Refrigerator

Tips

  • Choose dark chocolate with about 60 to 70 percent cacao so the ganache is rich without being harshly bitter.
  • If the ganache splits, add a tablespoon of warm heavy cream and stir vigorously from the center, and it will turn smooth again.
  • Serve the tart with a few fresh raspberries or some unsweetened whipped cream to balance the sweetness.

Storage

Cover the tart well and keep it in the fridge for up to four days, away from strong-smelling foods. The ganache firms up in the cold, so let the tart sit at room temperature for about fifteen minutes before enjoying it.

Common problems and how to fix them

The ganache is grainy or has separated into an oily layer.
The cream was too hot or it was stirred too hard right from the start. Heat the cream only until it bubbles at the edges, wait for the chocolate to melt, then stir slowly from the center outward.
The tart shell shrinks and the sides slip down.
The dough didn't rest long enough or the shell wasn't cold enough going into the oven. Rest the dough for a full hour and freeze the shell before baking.

This recipe is based on the common ratios for this bake and is written entirely in our own words.

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