Chocolate Sheet Cake

1 stick margarine
½ cup oil
4 tbsp cocoa
1 cup water

Bring to boil and pour over following ingredients:

Sift together:
2 cups flour
2 cups sugar

Add:
1 tsp soda
2 eggs, slightly beaten
½ cup buttermilk
1 tsp. vanilla

Bake on sheet in 400 degree oven for 15-20 minutes. Add icing.

Icing:
1 stick margarine
4 tbsp cocoa
6 tbsp milk

Melt and bring to a boil. Take from heat and pour over 4 cups icing sugar and 1 tsp vanilla. Beat well and spread on cake while both are warm.