Grind oats by running Quaker (or similar) either quick or regular oatmeal in a blender or food processor (I use Quick Oatmeal!) Combine ground oats, sugar, salt, soda, and spices in mixing bowl. Add shortening, eggs and vanilla. Beat until smooth, about 2 mins. Stir in applesauce and raisins (optional). Pour batter into greased 8-inch square baking pan. Bake in preheated moderate oven 350 degrees, 35-40 mins. Cool; cover pan and store one day before serving. Makes one 8" cake. Taken from "The Quaker Oats Company Wheat, Milk and Egg Free Receipes". These date back to the 1950s.