Heat oven to 350 degrees F. Line baking sheets with a silicone liner or parchment paper.
In a medium bowl, whisk flour, baking powder, baking soda and salt in a medium bowl.
In a small bowl, mix together the oats, cinnamon, nutmeg, nutmeg and raisins.
In another medium bowl, using a hand mixer, cream together the butter and sugar, until smooth - roughly 1-2 minutes. Add in the egg, vanilla, and pumpkin puree, and mix until creamy, scraping sides of the bowl as necessary.
Add in the flour mixture to the butter mixture. Using the hand mixer on low, mix together until just incorporated.
Add in the oat mixture and stir together until evenly mixed. Do not over mix.
Using a spoon or cookie scoop, roll 1" balls of dough and place on prepared baking sheets.
Bake for 15-18 minutes or until the centers of the cookies are slightly soft and the edges are golden brown.
Cool cookies on a wire rack and enjoy!