-
1
Preheat the oven to 350 degrees F.
-
2
For the cake: Lightly grease a 9-by-13-inch cake pan with butter.
-
3
Combine the flour, sugar and baking soda in the bowl of a stand mixer or mixing bowl.
-
4
Combine the butter, cocoa and 1 cup water in a medium saucepan and bring to a boil while mixing.
-
5
Add the cocoa mixture to the flour mixture, along with the buttermilk eggs and vanilla, and beat for 3 minutes.
-
6
Pour into the prepared cake pan and bake until firm to the touch and a toothpick inserted in the center comes out clean, 30 to 40 minutes.
-
7
Let cool 10 minutes in the pan before turning out on a rack to cool completely.
-
8
For the frosting: Make the frosting as soon as the cake is out of the oven.
-
9
Combine the butter, buttermilk and cocoa in a small saucepan and bring to a boil while mixing.
-
10
Combine with the confectioners' sugar in the bowl of a stand mixer and beat until smooth.
-
11
Spread the frosting evenly on the cake.
-
12
This recipe was provided by a chef, restaurant or culinary professional and may have been scaled down from a bulk recipe.
-
13
The Food Network Kitchens have not tested it for home use and therefore cannot make any representation as to the results.
