Preheat oven to 350 degrees. Spray a 9” x 13” glass baking dish with cooking spray.
In a mixing bowl, combine oats, milk, applesauce, eggs, syrup, vanilla, Stevia, cinnamon, baking powder, and salt. Gently fold in blackberries. Pour into prepared baking dish.
Bake for 35-45 minutes or until set and lightly brown. Serve warm or cold with “frosting.” Store in refrigerator for up to one week.
For “frosting,” stir all ingredients together in a bowl. Cover and refrigerate.
I reheat each piece in the microwave on HIGH for 30 seconds. Top warm oatmeal with a couple spoonfuls of “frosting.”