Preheat oven to 350 degrees.
In a medium bowl, combine the flour, oats, salt, baking soda, and ground cinnamon.
In a separate bowl, cream the butter and add in the sugar, eggs, and vanilla,
Combine the butter mixture with the flour mixture.
Add in the pumpkin, mixing until just combined.
Fold in the butterscotch chips.
Roll dough into 1-2 inch balls and place on a cookie sheet, about 2 inches apart.
Flatten the cookie slightly and sprinkle a touch of brown sugar on top (optional).
Place cookie sheet into oven and bake for about 23-25 minutes, or until light brown.
Remove from oven and allow to cool slightly before placing on cookie sheet or enjoying!