Mix the butter, sugar and egg together until blended using a food processor or stand mixer
In another bowl, mix together the flour and baking powder.Add flour mixture to the butter mixture and stir until dough forms.
In a small bowl, mix together the flour and sugar. Roll dough into golf ball size dough balls, then roll in the cinnamon sugar mixture.
Place on a baking sheet and bake in preheated oven 8 to 10 minutes.
Remove from oven, and promptly decorate with 2 mini pretzels as the reindeer antlers, 2 chocolate chips for eyes and one red m&m, dried cranberries or red sprinkle (such as the holiday light one I used) for the red nose.