Mix together. Mix in saucepan ... a boil and pour in flour and sugar mixture ... minutes. Start making icing about 5 minutes before cake ... well and spread over hot cake. Leave in pan to ice.
Combine flour, sugar, and salt ... soda and vanilla. Pour boiled cocoa mixture over sugar and flour mixture. Combine ... from oven and ice while hot. Prepare icing while cake is baking. Mix ... icing over hot cake.