Chocolate truffle cake with chestnut cream and ganache

  • Chocolate truffle cake with chestnut cream and ganache
  • 2 cups (500ml) milk
  • 250g unsalted butter, chopped
  • 300g dark chocolate, roughly chopped
  • 300ml thickened cream
  • 3 eggs
  • 1 vanilla bean, split, seeds scraped
  • 1 3/4 cups (385g) caster sugar
  • 2 3/4 cups (410g) plain flour
  • 1 tablespoon cocoa powder
  • 1 teaspoon baking powder

Chestnut cream

  • 50g dark chocolate, roughly chopped
  • 300g unsweetened chestnut puree (see notes)
  • 75g softened unsalted butter, chopped
  • 1 1/3 cups (200g) pure icing sugar, sifted
  1. Preheat oven to 160°C. Grease and line two 22cm round springform cake pans.
  2. Step 2
    Place milk, 225g butter, 200g chocolate and 1/2 cup (125ml) cream in a saucepan over medium-low heat and cook, stirring, for 6-7 minutes until melted and combined. Set aside for 20 minutes or until cool.
  3. Step 3
    Meanwhile, place eggs, vanilla seeds and sugar in a large bowl and beat with electric beaters until thick and pale. Beat in the cooled chocolate mixture, then sift over the flour, cocoa, baking powder and a pinch of salt, then beat to combine.
  4. Step 4
    Divide batter between cake pans, tap gently on benchtop to remove air bubbles, then bake for 45 minutes or until a skewer inserted into the centre comes out clean. Cool in pans for 15 minutes, then turn out onto a wire rack to cool completely.
  5. Step 5
    For the chestnut cream, place 50g chocolate in a heatproof bowl set over a pan of gently simmering water (don’t let bowl touch water) and stir until melted. Remove from heat and cool slightly. Beat the chestnut puree with electric beaters for 4-5 minutes until creamy, then add the butter and icing sugar, and beat for a further 3-4 minutes until light and fluffy. Beat in the melted chocolate. Set aside.
  6. Step 6
    To make the ganache, place remaining 100g chocolate in a heatproof bowl. Place the remaining 175ml cream in a small saucepan over medium-low heat and bring to just below boiling point, then pour over the chocolate. Stand for 4 minutes or until chocolate is melted, then add the remaining 25g butter and stir until smooth and glossy. Cool for 5 minutes or until slightly thickened.
  7. Step 7
    Line a work surface with foil (this makes it easier to clean up), then top with a wire wrack. Spread the chestnut cream over the top of one cake, leaving a 2cm border, then place the second cake on top, pressing down lightly. Place the cake on the wire rack, then pour over the ganache, allowing it to drizzle down the sides. If desired, spread ganache around sides with a spatula to cover completely. Allow ganache to set slightly, then serve.

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