teacherman's no fail texas sheet cake

Ingredients

• MIX TOGETHER:
• 2 cups flour
• 2 cups sugar
• 1 teaspoon baking soda
• BOIL:
• 1 cup water
• 2 sticks butter
• 3 1/2 tablespoons cocoa
• POUR ABOVE OVER FLOUR MIXTURE AND MIX WELL, THEN ADD:
• 1/2 cup buttermilk
• 2 - eggs
• 1 teaspoon vanilla
• MIX WELL AND POUR INTO UNGREASED COOKIE SHEET. BACK AT 400 DEGREES FOR 20 MIN. ADD ICING WHEN CAKE IS SEMI-COOLED.
• ICING: MIX TOGETHER AND BRING TO A BOIL, THEN REMOVE FROM HEAT:
• 3 1/2 tablespoons cocoa
• 1 stick butter
• 6 tablespoons milk
• ADD ABOVE TO:
• 1 pound powdered sugar
• 1/2 pound chopped walnuts (optional)
• MIX AND SPREAD OVER CAKE.