Ingredients
1/4 cup baking cocoa1 cup water1 cup canola oil1/2 cup butter, cubed2 cups self-rising flour2 cups sugar1/2 cup buttermilk2 eggsFROSTING (for the layer cake):1/2 cup butter, cubed1/4 cup baking cocoa1/4 cup milk4 to 4-1/2 cups confectioners’ sugar1 teaspoon vanilla extract
Preparation
In a small saucepan over medium heat, combine cocoa and water until smooth; add the oil and butter. Bring to a boil; cook and stir for 1 minute. Remove from the heat.
In a large bowl, combine flour and sugar; gradually add cocoa mixture, beating well. Add buttermilk and eggs; mix well. Pour into a greased 15x10x1-in. baking pan.
Bake at 350° for 28-30 minutes or until a toothpick inserted in the center comes out clean. Cool on a wire rack. Cut cake into four 7-1/2x5-in. rectangles. Wrap two of the rectangles separately in foil; refrigerate or freeze. Set the other two rectangles aside.
For frosting, combine the butter, cocoa and milk in a saucepan. Bring to a boil; cook and stir for 1 minute (the mixture will appear curdled). Pour into a large bowl. Gradually add confectioners’ sugar and vanilla; beat until frosting achieves spreading consistency. Frost the top of one cake rectangle; top with the second rectangle. Frost top and sides of cake.
