Preheat oven to 350º F. Spray a cookie sheet with cooking spray, set aside.

In a mixing bowl, smash banana with a fork. Add in peanut butter and mix together. Continue adding the Truvia, vanilla, oats, cinnamon, flour, milk, baking soda and raisins. Lightly mix until blended.

Drop by tablespoon (I used a cookie scoop) onto cookie sheet. Get the bottom of a cup wet with water and smash each cookie down into a flat circle.

Bake for 14-16 minutes or until golden brown. Transfer to rack to cool. Store all leftovers in an airtight container. Enjoy!