Ina Garten: Beatty's Chocolate Cake

This is the best chocolate cake I have ever made.  Or ever eaten.  And I'm not even exaggerating.  I threw out every other chocolate cake recipe I own.  You can't beat perfection, so why bother to try?  The cake is tender, the chocolate is rich, and the coffee just sits in the background, minding it's own business, and yet making everything else even more fabulous.

Beatty's Chocolate Cake
Adapted from Ina Garten

Butter, for greasing the pans
1¾ cups all-purpose flour, plus more for pans
2 cups granulated sugar
¾ cups good cocoa powder
2 teaspoons baking soda
1 teaspoon baking powder
1 teaspoon kosher salt
1 cup buttermilk, shaken
½ cup vegetable oil
2 extra-large eggs, at room temperature
1 teaspoon pure vanilla extract
1 cup freshly brewed hot coffee
Chocolate Buttercream Frosting

Preheat the oven to 350°F. Butter two 8-inch round cake pans. Line with parchment paper, then butter and flour the pans.

Sift the flour, sugar, cocoa, baking soda, baking powder, and salt into the bowl of an electric mixer fitted with a paddle attachment and mix on low speed until combined. In another bowl, combine the buttermilk, oil, eggs, and vanilla. With the mixer on low speed, slowly add the wet ingredients to the dry. With mixer still on low, add the coffee and stir just to combine, scraping the bottom of the bowl with a rubber spatula. Pour the batter into the prepared pans and bake for 35 to 40 minutes, until a cake tester comes out clean. Cool in the pans for 30 minutes, then turn them out onto a cooling rack and cool completely.

Place 1 layer, flat side up, on a flat plate or cake pedestal. With a knife or offset spatula, spread the top with frosting. Place the second layer on top, rounded side up, and spread the frosting evenly on the top and sides of the cake.

Chocolate Buttercream Frosting
6 ounces good semisweet chocolate (recommended: Callebaut)
1 cup (2 sticks) unsalted butter, at room temperature
1 extra-large egg yolk, at room temperature
1 teaspoon pure vanilla extract
1¼ cups sifted powdered sugar
1 tablespoon instant espresso powder

Chop the chocolate and place it in a heat-proof bowl set over a pan of simmering water. Stir until just melted and set aside until cooled to room temperature.

In the bowl of an electric mixer fitted with a paddle attachment, beat the butter on medium-high speed until light yellow and fluffy, about 3 minutes. Add the egg yolk and vanilla and continue beating for 3 minutes. Turn the mixer to low, gradually add the powdered sugar, then beat at medium speed, scraping down the bowl as necessary, until smooth and creamy. Dissolve the coffee powder in 2 teaspoons of the hottest tap water. On low speed, add the chocolate and coffee to the butter mixture and mix until blended. Don't whip! Spread immediately on the cooled cake.