These Low Calorie Pumpkin Spice Cookies are just 50 calories each and make the perfect fall treat!I used an all-natural zero calorie brown sugar to keep the calories low, but you can swap it out for brown sugar and the cookies will still be under 100 calories (85 calories with read brown sugar). Special Tip: I like these with white chocolate chips, but semi sweet chocolate chips are really great in it too! Feel free to swap them out.