Texas Sheet Cake

Cake:
2 c. flour
2 c. sugar
2 cubes margarine (fleichmans)
1 c. water
5 T. cocoa powder
1/2 c. buttermilk
2 beaten eggs
1 t. baking soda
1 t. vanilla

Bring margarine, cocoa, water to boil
Add sugar and flour, mix 2-3 minutes
Add buttermilk, eggs, baking soda, vanilla
Grease and flour jelly roll pan
Bake 15-20 minutes at 400 degrees

Frosting:
1 stick margarine
5-6 T. buttermilk
4 T. cocoa

Mix in sauce pan and bring to boil
Remove from heat and blend gradually (1) full box of sifted powdered sugar + 1 t. vanilla
Spread on top of sheet cake