Preheat oven to 350 degrees F. Lightly grease a baking sheet or line with parchment paper.
In a large bowl, combine brown sugar, oil, applesauce, vanilla, and pumpkin. Mix in the egg and stir well to combine. Add the remaining ingredients and stir just until completely mixed.
Drop dough by heaping teaspoons onto the prepared baking sheets. This works best with a small cookie scoop. Bake in preheated oven for 10 to 12 minutes. Allow cookies to cool on pan for 5 minutes before transferring to a cooling rack to cool completely.