1 c. water
1 c. butter
1/4 c. cocoa
2 c. flour
2 c. sugar
1 tsp. baking soda
1 1/2 tsp. cinnamon
2 eggs
1/2 c. buttermilk

Blend water, butter and cocoa in saucepan; heat to boiling. Blend in next four ingredients which have been sifted together. Stir in eggs and buttermilk; beat well. Pour into greased 15 1/2 x 10 1/2 jelly roll pan. Bake at 400 degrees for 20 minutes.