Barefoot Contessa on Food Network. If you decide to try your hand at the recipe (and I think you really should) keep in mind that the cake batter should come out very thin (or runny).
You will need:
* Butter, for greasing the pans
* 1 3/4 cups all-purpose flour, plus more for pans
* 2 cups sugar
* 3/4 cups good cocoa powder
* 2 teaspoons baking soda
* 1 teaspoon baking powder
* 1 teaspoon kosher salt
* 1 cup buttermilk, shaken (if you don't have buttermilk, you can add 2 tablespoons of vinegar - i typically add apple cider vinegar - to 1 cup of milk and let it sit for 10 minutes. Don't just use regular milk, you need the acidity to interact with your leavening agents)
* 1/2 cup vegetable oil
* 2 extra-large eggs, at room temperature
* 1 teaspoon pure vanilla extract
* 1 cup freshly brewed hot coffee
Preheat the oven to 350 degrees F. Butter 2 (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 Butter Cream Frosting (also from Barefoot Contessa)
6 ounces good semisweet chocolate (this time I actually used a dark chocolate, not a semi-sweet. Use whatever you like best.)
1/2 pound (2 sticks) unsalted butter, at room temperature
1 extra-large egg yolk, at room temperature
1 teaspoon pure vanilla extract
1 1/4 cups sifted confectioners' sugar
1 tablespoon instant coffee 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.