Preheat oven to 375°F. Line baking sheets with parchment paper and set aside.

In a large bowl, beat the butter, brown sugar and sugar until creamy. Add the pumpkin, egg and vanilla; beat until smooth and well combined.

In a separate bowl, combine the flour, oats, cinnamon, baking soda, baking powder and salt. Mix into the pumpkin mixture just until combined. Fold the chocolate chips into the dough. Using a cookie scoop, drop dough onto the baking sheets, spacing about 2 inches apart.

Bake for 10-12 minutes or until the edges just begin to brown. Allow to cool on the pan for 3 minutes before removing to a cooling rack to cool completely.

Store leftover cookies in a covered container.