Bring to boil: margarine, water, and cocoa.
While heating, mix in large mixing bowl: sugar, dry buttermilk and flour.
Pour chocolate mixture into flour mixture. Mix well. Add eggs, vanilla, 1/2 c. water and baking soda. Mix well.
Bake in one greased 17"x11"x3/4" cookie sheet (jelly roll pan) at 400 degrees for 15 minutes. Cool five minutes. Frost with above frosting recipe.
For frosting: Cook margarine, cocoa and milk until melted only. Add approximately 1 pound powder sugar and 1 teaspoon vanilla. Pour on cake while hot.
While heating, mix in large mixing bowl: sugar, dry buttermilk and flour.
Pour chocolate mixture into flour mixture. Mix well. Add eggs, vanilla, 1/2 c. water and baking soda. Mix well.
Bake in one greased 17"x11"x3/4" cookie sheet (jelly roll pan) at 400 degrees for 15 minutes. Cool five minutes. Frost with above frosting recipe.
For frosting: Cook margarine, cocoa and milk until melted only. Add approximately 1 pound powder sugar and 1 teaspoon vanilla. Pour on cake while hot.
