2 c. flour
2 c. sugar
1/2 c. butter
1/2 c. regular shortening
1 tsp. cinnamon
1 tsp. baking soda
4 tbsp. cocoa
1 c. cold water
1/2 c. buttermilk
1 tsp. vanilla
1/4 tsp. salt
2 eggs

Mix flour and sugar in a bowl. Combine butter, regular shortening and cold water, and heat to boiling. Pour over flour and sugar and mix well. Add buttermilk, vanilla, cinnamon (if desired), salt, baking soda and eggs, and mix. Pour into well-greased jelly roll pan. Bake in preheated oven for 20 minutes.

FROSTING FOR SHEET CAKE:

1 c. butter
1 lb. powdered sugar
4 tbsp. cocoa
1 c. walnuts, chopped
1 tsp. vanilla
5 tbsp. milk

Blend all ingredients together and frost sheet cake.