-
Grease 15x10x1 inch baking pan; set aside.
-
combine flour, sugar, baking soda and salt and set aside.
-
In a medium saucepan combine butter, cocoa powder and 1 cup water.
-
Bring mixture just to boiling, stirring constantly.
-
Remove from heat.
-
Add the chocolate mixture to dry mixture and beat with an electric mixer on medium to high speed until thoroughly combined.
-
Add eggs, buttermilk and vanilla.
-
Beat for 1 minute (batter will be thin).
-
Pour batter into the prepared pan.
-
Bake in a 350 degree oven about 25 minutes or until wooden toothpick comes out clean when inserted in the center of the cake.
-
Pour warm chocolate buttermilk frosting over the warm cake, spreading evenly.
-
Place cake in pan on a wire rack; cool thoroughly before cutting.
-
Chocolate-Buttermilk Frosting: In a medium saucepan combine butter, cocoa powder and buttermilk.
-
Bring to boiling.
-
Remove from heat.
-
Add sifted powdered sugar and vanilla.
-
Beat until smooth.
-
If desired, stir in 3/4 cup coarsely chopped pecans.