Chocolate Raspberry Mousse Tart
Chocolate Raspberry Mousse Tart
Savor this quick and easy dessert recipe by Anna Olson from Bake with Anna Olson.
  • Difficulty Level Easy
  • Technique Baking
  • Preparation Time 7 hours
  • Cooking Time 50 minutes
  • Yield 12 servings
Ingredients
  • Cake:
  • ¾ cup Cake & pastry Flour
  • ⅔ cup granulated Sugar
  • ¼ cup Dutch process Cocoa powder
  • ½ teaspoon Baking soda
  • ¼ teaspoon Salt
  • ¼ cup cool unsalted Butter, cut into pieces
  • ¼ cup hot, strongly brewed Coffee
  • ¼ cup Milk
  • 1 large Egg, at room temperature
  • 1 teaspoon Vanilla extract
  • Raspberry Mousse:
  • 400 grams frozen Raspberries, thawed (keep juices)
  • 2 cups Whipping cream
  • 1 teaspoon Vanilla extract
  • 1 tablespoon (1pkg) unflavoured Gelatin powder
  • 4 large Egg yolks
  • 1 large Egg
  • ⅔ cup granulated Sugar
  • 3 tablespoons Lemon juice
  • Ganache Glaze:
  • 113 grams bittersweet Chocolate, chopped
  • ½ cup unsalted Butter
  • 1 tablespoon Corn syrup
  • Fresh Raspberries, for garnish
Method
  1. For the cake, preheat the oven to 350 °F (180 °C). Grease a 9-inch (23 cm) cake pan and line the bottom with parchment. Dust the sides of the pan with flour, tapping out any excess flour
  2. Sift the flour, sugar, cocoa powder, baking soda and salt into a large mixing bowl or into the bowl of a stand mixer fitted with the paddle attachment. Add the butter cutting it in (if in a large bowl, use electric beaters) until the mixture is a fine crumble (like the texture of fine breadcrumbs) and no large pieces of butter are visible
  3. Stir the hot coffee, milk, egg and vanilla together and add it all at once to the flour mixture, blending until smooth and then increase the speed to medium and whip until pale and thick, about 3 minutes. Pour the batter into the prepared pan and tap it on the counter to eliminate any bubbles
  4. Bake the cake for about 30 minutes, until a tester inserted in the centre of the cake comes out clean. Cool the cake for 20 minutes in the pan, and then tip out onto a cooling rack to cool completely to room temperature. The cake can be baked a day ahead, wrapped and stored at room temperature before assembling
  5. To prepare for assembly, lightly grease and line the sides of a 9-inch (23 cm) springform pan with parchment paper so that it comes just a little above the top of the pan. Set the cooled chocolate cake into the bottom of the pan
  6. For the raspberry mousse, puree and strain the raspberries and measure out 1 cup (250 mL) to use. Whip the cream to a soft peak, stir in the vanilla, and chill until ready to assemble. Stir the gelatin into ¼ cup (60 mL) of cool water in a small dish and set aside
  7. In a large metal bowl, whisk the egg yolks, whole egg, sugar and lemon juice together. Place the bowl over a pot of gently simmering water and whisk constantly and rather vigorously (or you can use electric beaters) until they are frothy and doubled in volume, and registers 175 °F (80 °C). Remove the bowl from the heat and whisk in the softened gelatin (the mixture will go fluid). Whisk in the raspberry puree – this will cool down the mixture, but make sure it has cooled to room temperature before folding in the whipped cream in 2 additions. Pour the mousse into the pan and spread to level if needed (the mousse will be somewhat fluid at this point). Chill the mousse for at least 6 hours before unmolding (this can be done a day ahead of serving
  8. For the ganache glaze, put the chocolate, butter and corn syrup in a small metal bowl and place this over a small pot of barely simmering water, stirring with a spatula until melted. Set aside to cool slightly until it is at room temperature and a little thickened (you can re-warm if it sets up too much, or if you make it ahead)
  9. Remove the ring from the springform pan and peel away the parchment paper from the mousse. Carefully transfer the cake onto a serving platter or cake stand. Pour the ganache glaze over the cake and gently coax the glaze to the edges so that it drips down a little without running down. The chilled mousse will set the chocolate, so you need to work quickly. Top the cake with a few fresh raspberries and chill until ready to serve
  10. The cake can be made a day in advance of serving

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