Spray a large dish (round or 9x13) with PAM. In a large bowl, mix the oats and baking powder together. In a separate bowl combine the cookie butter, eggs, milk and vanilla and mix well. Mix the dry ingredients and wet ingredients together and pour into prepared pan. Bake for 25-30 minutes or until set.
Recipe by Five Wooden Spoons at https://www.fivewoodenspoons.com/2013/07/02/cookie-butter-baked-oatmeal/