Add pure vanilla extract, cinnamon, allspice, milk, and oat flour to food processor. NOTE: Oat flour can be easily made by taking either old fashion rolled or quick oats and blending them in a high speed blender until a fine flour consistency is formed. Use about 1/4 cup plus 1 Tbsp of oats to get the 1/3 cup of flour thats required for the recipe. Be sure to measure the prepared flour to the required amount thats needed for the recipe. Left over flour can be stored in a tightly sealed glass mason jar in your pantry.