Cookie Sheet Cake

2 c flour

2 c sugar

1 tsp salt

1 stick margarine

1/2 c oil

1 c water

3 tbsp cocoa

2 eggs

1/2 c buttermilk

1 tsp baking soda

--ICING-- 3 tbsp cocoa

1 stick margarine

1 lb confectioner's sugar -- (1 box)

1 tsp vanilla

6 tbsp milk

1/2 c nuts

CAKE: In large bowl, combine flour, sugar, and salt. Mix well. In saucepan, add margarine, oil, water, & cocoa. Bring to a boil & add to flour mixture; stir well. Add eggs, buttermilk, and baking soda. Mix well. Pour on ungreased cookie sheet and bake 20 minutes at 350?.

ICING: Mix all ingredients until smooth. Frost cake as soon as it is taken out of oven.