With a crunchy crust and hint of espresso.
Preheat oven to 350 degrees F (175 degrees C).
In a large bowl, cream butter and confectioners sugar until light and fluffy. Stir together flour and baking powder; blend into butter mixture. Pat into a 9 x 12 casserole style dish.
Bake in preheated oven for 5 minutes, and no longer because you will bake it again.
Sift together flour sugar andsalt.
In separate bowl beat eggs, buttermilk, soda and vanilla.
In a saucepan bring butter, cocoa and water to a boil.
Combine 3 mixtures and mix till blended.
Pour over crust.
Bake 25 minutes at 350F degrees.
Let cool before serving.
Sprinkle: mix together all sprinkle ingredients and dust over your cake.