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Ina Garten Chocolate Mousse Cake

Ina Garten Chocolate Mousse Cake
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This rich chocolate mousse cake is built in layers: a tender stovetop chocolate sponge, a silky dark chocolate mousse center, and a glossy whipped cream finish. The texture is airy yet deeply fudgy, with balanced bittersweet chocolate flavor and a clean, elegant finish.

Ingredients

Scale

For the cake:

  • 4 tbsp unsalted butter, plus 1 tsp for greasing the pan
  • 4 oz bittersweet chocolate, finely chopped
  • 2 large eggs, separated
  • 1/4 cup granulated sugar, divided
  • 1/4 cup all-purpose flour, sifted
  • 1/8 tsp kosher salt

For the mousse filling:

  • 4 oz bittersweet chocolate, finely chopped
  • 1 tbsp unsalted butter
  • 2 large eggs, separated
  • 2 tbsp granulated sugar
  • 1 tbsp whole milk
  • 1/8 tsp kosher salt
  • 1/2 cup heavy cream, cold
  • 1/2 tsp pure vanilla extract

For the topping:

  • 1/2 cup heavy cream, cold
  • 1 tbsp granulated sugar
  • 1 tbsp unsweetened cocoa powder, sifted

Instructions

  1. Prepare a 6-inch round cake pan by lightly greasing the bottom and sides with 1 tsp butter and lining the bottom with a parchment round. Set the pan over a wide, heavy pot fitted with a tight lid and a folded kitchen towel under the lid to catch condensation; this gives you a gentle, even stovetop baking environment and prevents water droplets from marking the cake surface.
  2. Make the cake batter by placing 4 oz chopped bittersweet chocolate and 4 tbsp butter in a heatproof bowl set over barely simmering water. Stir until fully melted and glossy, then remove from the heat and let it cool for 3 to 4 minutes so it does not scramble the egg yolks in the next step.
  3. Whisk the 2 egg yolks with 2 tbsp of the sugar until the mixture looks slightly thickened and pale, about 1 minute by hand. Stir the yolk mixture into the melted chocolate, then fold in the sifted flour and 1/8 tsp kosher salt until no dry streaks remain; do not overmix or the sponge can become dense.
  4. In a clean bowl, beat the 2 egg whites until foamy, then gradually add the remaining 2 tbsp sugar and whip to medium peaks. Fold one-third of the whites into the chocolate mixture to lighten it, then fold in the rest with a spatula using broad strokes, rotating the bowl so you keep as much air in the batter as possible.
  5. Scrape the batter into the prepared pan and smooth the top gently. Set the pan into the prepared covered pot and cook over low heat for 22 to 25 minutes, until the top is matte, the center springs back lightly, and a tester inserted in the middle comes out with a few moist crumbs rather than wet batter.
  6. Transfer the pan to a rack and cool for 10 minutes, then run a thin knife around the edge and turn the cake out. Peel off the parchment, turn the cake right side up, and cool completely; a warm cake will melt the mousse and cause the layers to slide.
  7. For the mousse, melt 4 oz chopped bittersweet chocolate with 1 tbsp butter and 1 tbsp whole milk in a heatproof bowl over barely simmering water, stirring until smooth. Remove from the heat and let it stand for 3 minutes, then whisk in the 2 egg yolks and 1/8 tsp kosher salt until the mixture is thick, shiny, and fully emulsified.
  8. Whip the 1/2 cup cold heavy cream with the vanilla to soft peaks in a chilled bowl; the cream should mound softly and curl over at the tip. In a separate clean bowl, beat the 2 egg whites until foamy, gradually add the 2 tbsp sugar, and whip to medium peaks so the mousse sets with volume but does not turn grainy.
  9. Fold the whipped cream into the chocolate base in two additions, then fold in the whipped egg whites in two additions until the mousse is evenly colored and airy. Use a light hand and stop as soon as the streaks disappear, because overfolding knocks out the structure that gives the mousse its delicate texture.
  10. Split the cooled cake horizontally with a serrated knife into two even layers. Set the bottom layer on a serving plate, spread the mousse evenly over it leaving a 1/4-inch border, then place the second layer on top and press very lightly so the filling reaches the edge without squeezing out.
  11. Chill the assembled cake, uncovered for the first 20 minutes and then loosely covered, for at least 3 hours or until the mousse is fully set. This resting time is essential for clean slices and a stable crumb; if cut too early, the mousse will slump and the layers will shift.
  12. For the topping, whip the remaining 1/2 cup cold heavy cream with 1 tbsp sugar to medium peaks, then spread or pipe it over the chilled cake. Dust the top evenly with the sifted cocoa powder just before serving so it stays dry and velvety rather than dissolving into the cream.
  13. To serve, use a thin knife dipped in hot water and wiped dry between slices for the cleanest presentation. If you prefer an oven alternative for the cake layer, bake the batter in the same prepared 6-inch pan at 350°F / 177°C for 14 to 18 minutes, then cool and assemble exactly as directed.

Notes

Store the finished cake covered in the refrigerator for up to 3 days. Freeze individual slices or the whole cake, well wrapped, for up to 1 month; thaw overnight in the refrigerator before serving. This cake is best served cold or after standing at room temperature for 10 to 15 minutes. Do not microwave to reheat, as the mousse will melt; if you want the cake layer slightly softer, let a slice stand at room temperature briefly instead.

Nutrition

Find it online: https://inagartendishes.com/ina-garten-chocolate-mousse-cake/