Flourless Chocolate Espresso Cake

This recipe is excerpted from "Martha Stewart's Cakes" (Clarkson Potter, September 2013; $25).

  • Prep:
  • Total Time:
  • Servings: 8
Flourless Chocolate Espresso Cake

Photography: Jonathan Lovekin

Source: Martha Stewart Living, September 2013

Ingredients

  • 3 tablespoons unsalted butter, plus more for cake pan
  • 6 ounces bittersweet chocolate, preferably 70 percent cacao, chopped
  • 6 large eggs, separated, room temperature
  • 1 cup sugar, divided
  • 3 tablespoons instant-espresso powder
  • 1/4 teaspoon coarse salt
  • 1 tablespoon pure vanilla extract
  • Chocolate Glaze

Directions

  1. Preheat oven to 350 degrees. Invert bottom of a 9-inch springform pan (so cake will slide easily onto serving plate) and line with a parchment round; butter parchment. Melt butter and chocolate, stirring until smooth, in a bowl set over a saucepan of simmering water.

  2. Beat together egg yolks and 1/2 cup sugar with a mixer on medium-high speed until thick and pale, about 3 minutes. Add espresso powder and salt; beat until combined, about 1 minute. Add vanilla and melted-chocolate mixture; beat about 1 minute more.

  3. In another bowl, beat egg whites on medium-high speed until foamy. Increase speed to high; gradually add remaining 1/2 cup sugar, beating until stiff peaks form, about 5 minutes. Fold into chocolate mixture in 3 batches. Transfer batter to pan and bake until set, 40 to 45 minutes. Let cake cool completely in pan on a wire rack. Remove side of pan; transfer cake to a serving plate. Serve glaze alongside cake.

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