Add oats and enough water to cover. Microwave 3 minutes.
Mix in remaining oatmeal ingredients. It should be very thick. Add to freezer briefly to thicken up and cool before adding filling/icing.
Mix filling ingredients with a splash of cold water until thick. Add to fridge.
Repeat for icing.
Optional: Use rectangular dish for the pop tart shape.
Add ⅔ of oatmeal, spread to edges, and hollow the center leaving a thin base. Add filling.
Add remaining oatmeal in small globs to fully cover filling. Top with icing and a sprinkle of brown sugar.
Enjoy immediately or refrigerate overnight.
