Featured Pinch Tips Video
In a saucepan, mix one stick margarine, 3 tablespoons cocoa, and the water. Pour over flour and sugar. Mix.
Mix the baking soda and vanilla extract with the buttermilk. Add to the mixture. Bake at 400 degrees for 20 minutes.
Melt remaining margarine, cocoa, powdered sugar, milk, and pecans together. Pour over hot cake. Spread icing fast before it hardens.