Preheat Oven to 350℉ and line baking sheet with parchment paper.
Add oil, pumpkin, egg, vanilla and brown sugar to mixer and cream on medium low until smooth.
In a separate bowl sift all dry ingredients.
Slowly add to mixer, while mixing on low. Mix until smooth.
Using a #20 scoop (yellow handle) or a scant 1/4 cup, scoop 12 scoops evenly spaced on cookie sheet.
If they are a little distorted or you need to pat down a piece that may be sticking up, wet your fingers with a little water and lightly press the batter.
Bake for 10-14 minutes until toothpick comes out clean.
Allow to cool completely before filling.