In a large mixing bowl, combine room temperature butter and sugar with a mixer
Slowly incorporate the egg yolk, pumpkin puree, vanilla and food coloring
In a separate bowl, combine flour, baking powder, salt, pumpkin pie spice and cinnamon
Gradually mix the flour mixture into the pumpkin mixture and combine well
Refrigerate dough for 30 minutes
Preheat oven to 350 F and spray cookie sheet with non-stick cooking spray
Using your hands, roll dough into a small 1-inch balls and lightly roll them around in a bowl of sugar to coat
Evenly space dough balls apart from each other on cookie sheet and gently press down with a fork or spatula
Bake for 10-12 minutes
Allow to cool briefly on pan, then place on cooling rack to prevent the bottom from over cooking on baking sheet
Enjoy!