Preheat oven to 400 degrees F.
To Make The Brownies:
Combine water and oil in small saucepan; bring to a boil. Combine flour, sugar and cocoa in a mixing bowl. Add hot water mixture and stir well. Combine buttermilk and baking soda; stir until soda dissolves. Add buttermilk mixture and eggs to batter; mix well. Stir in chopped nuts if using.
Spoon into a greased 15x10x1-inch jelly-roll pan coated with nonstick cooking spray. Bake for 15 minutes.
Frost brownies with Chocolate Buttermilk Frosting while warm. Cool and cut into 24 squares.
To Make The Frosting: Combine butter (or margarine), buttermilk, and cocoa in a medium saucepan; bring to a boil. Add confectioners' sugar and vanilla, blend until smooth.
Makes 2 dozen, three inch size brownies.
Date: September 11 2002