Ingredients
4 large eggs, separated3 tablespoons butter8 ounces dark baking chocolate, chopped1/3 cup plus 1/4 cup sugar, divided1 container (2-1/2 ounces) prune baby food1-1/2 teaspoons vanilla extractConfectioners’ sugar
Preparation
Place egg whites in a small bowl; let stand at room temperature 30 minutes. Preheat oven to 350°. Coat a 9-in. springform pan with cooking spray; place on a baking sheet.
In a small saucepan, melt butter and chocolate over low heat, stirring constantly. Remove from heat; cool slightly. In a large bowl, beat egg yolks on high speed 3 minutes or until slightly thickened. Gradually add 1/3 cup sugar, beating until thick and lemon-colored. Beat in baby food, vanilla and the chocolate mixture.
With clean beaters, beat egg whites on medium until soft peaks form. Gradually add remaining sugar, 1 tablespoon at a time, beating on high after each addition until sugar is dissolved. Continue beating until stiff glossy peaks form. Fold a fourth of the whites into chocolate mixture, then fold in remaining whites.
Pour into prepared pan. Bake until a toothpick inserted in center comes out with moist crumbs, 30-35 minutes. Cool on a wire rack 20 minutes. Loosen sides from pan with a knife; remove rim from pan. Cool cake completely. Dust with confectioners’ sugar before serving.
