Prep Time: 10 minutes
Cook Time: 20 minutes
Total Time: 30 minutes
- For the Cupcakes:
- 3 Tablespoons Dutch-process cocoa powder
- 1/4 cup hot water
- 1-1/4 cups unbleached all-purpose flour
- 1/2 teaspoon each baking powder
- 1/2 teaspoon baking soda
- 1/4 teaspoon salt
- 1 orange
- 2 large eggs, at room temperature
- 3/4 cup granulated sugar
- 1/2 cup buttermilk, at room temperature
- 1/2 teaspoon vanilla extract
- 1/4 cup unsalted butter, melted and cooled to room temperature
- For the Frosting:
- 6 ounces bittersweet chocolate
- 1 cup unsalted butter, at room temperature
- 2 cups confectioners' sugar
In a small bowl, stir the cocoa powder into the hot water until it dissolves; set aside. Sift the flour, baking powder, baking soda, and salt together into a bowl. Using the finest rasps of a handheld grater, grate the zest from the orange into the bowl. Set aside.
In a large bowl, whisk together the eggs and granulated sugar until well combined. Whisk in the buttermilk and vanilla, then the dissolved cocoa. Whisk in the melted butter, then the dry ingredients.
Using a tablespoon, divide the batter among the muffin cups filling each about half full. Bake until the cupcakes are puffed and a skewer inserted into the center of one comes out clean 15 to 20 minutes. Let cool completely on a wire rack. Remove the cupcakes from the pan.
To make the frosting, melt the chocolate and let cool to room temperature. Meanwhile, using a stand mixer, beat the butter and confectioners' sugar with the paddle on medium speed until creamy and smooth, about 3 minutes. Beat in the melted chocolate until combined. Fill a pastry bag fitted with a 1/2-inch star tip with the frosting and pipe a spiral on top of each cupcake.
Refrigerate the cupcakes until 30 minutes before serving to set the frosting.
To melt chocolate, chop it into small pieces and put it in a stainless-steel bowl. Set the bowl in a saucepan over, but not touching, barely simmering water. Heat until the chocolate melts, stirring occasionally. Do not allow any water or steam to come in contact with the chocolate, or it will become stiff and grainy. Or, chop the chocolate in large pieces, place in a microwave-safe dish, and microwave on low for 1 minute. Continue to microwave if necessary, checking every 20 seconds, until the chocolate looks softened, then stir until smooth and liquid.
Chocolate is made by crushing roasted cocoa beans into bits, or nibs, to produce what is known as chocolate liquor. To make unsweetened cocoa powder, much of the cocoa butter (the fat of chocolate) is removed from the liquor and what remains is ground. Dutch-process cocoa, or alkalized cocoa, has a mild flavor and a rich, dark color due to the addition of potassium carbonate, nonalkalized cocoa has a bolder taste and lighter color.
Yield: 12 cupcakes
Recipe Source: Williams-Sonoma Cake by Fran Gage (Simon & Schuster)
Reprinted with permission.