Pour boiling water over oatmeal. Let stand at room temperature. Cream the butter and sugar well. Add eggs and beat well after each addition. Sift flour with soda and spices. Add oatmeal, then flour mixture. Add vanilla. Bake for 25 minutes at 350ยบ. Remove from oven and spread with topping.
Topping:
Return to the oven for a few minutes to cook the frosting. Watch closely.