2 c. flour
2 c. sugar
2 sticks butter
4 tbsp. cocoa
1 c. water
1/2 c. sour cream
1 egg
1 tsp. baking soda
1 tsp. vanilla

FROSTING:

4 tbsp. cocoa
6 tbsp. milk
1 stick butter
1 tsp. vanilla
Nuts (opt.)
1 lb. powdered sugar

Mix flour and sugar in large bowl; set aside. Bring butter, cocoa and water to a boil in saucepan. Add to flour mixture, add sour cream and add egg, soda and vanilla. Beat until smooth. Pour onto greased large cookie sheet. Bake for 20 minutes at 350 degrees. Five minutes before done, start frosting.

FROSTING: Bring first 3 ingredients to a boil. Add powdered sugar, vanilla and nuts. Pour over cake from oven, cut into squares.