Chocolate Cookie Sheet Cake - cooking recipe

Ingredients

2 c. sugar
2 c. flour
2 tsp. cinnamon (optional)
1 stick margarine
1/2 c. oil
1/4 c. cocoa
1 c. water
1 tsp. soda
1/2 c. buttermilk
2 eggs
1 tsp. vanilla

Preparation

Sift together sugar, flour and cinnamon.
Bring to a boil the margarine, oil, cocoa and water.
Pour over flour and sugar mixture.
Beat until mixed well.
Dissolve soda in buttermilk. Then add eggs and vanilla.
Add this to the previous mixture.
Pour into greased 12 x 18 x 1-inch pan.
Bake 20 minutes at 400\u00b0.
Five minutes before cake is done, make the following icing.