Buttermilk Brownies

These economical brownies only use cocoa powder, but have very intense chocolate flavor and appetizing dark color. The half a cup of chopped nuts are sprinkled on top of the frosting also made with cocoa powder and buttermilk. The texture of the brownies was so very smooth, cake-like, dense and moist I was almost convinced it was from a cake mix and I baked them myself. This made a large 15 X 10" pan full. I lined it with heavy duty foil so I could bend up the side to assure that the batter or frosting did not overflow the sides. A great potluck dish that was very popular.