In a large bowl mix flour and sugar. In a saucepan, combine the butter, cocoa powder and water, bring to a rapid boil. Then pour over the flour & sugar mixture. Mix well. Add eggs, vanilla, buttermilk & baking soda. Mix well then pour on a greased and floured jelly roll pan (15 ½ x 10 ½ inches). Bake for 20 minutes at 400 degrees. Five minutes before the cake is done, prepare the icing.

In a saucepan, bring to boil the butter, milk and cocoa powder. Once these items have come to a rapid boil, add in powdered sugar and vanilla and mix well. Pour this frosting over the cake while the cake is still hot.

Enjoy!