Preheat oven to 400°F

In a large bowl, mix together the Flour, Baking Soda, Cream of Tartar, and Cinnamon. Set aside.

In a separate bowl, cream together the Sugar and softened Butter.

Gradually beat in the Egg, as well as the Vanilla. Continue to mix until mixture is smooth and well blended.

Combine the liquid mixture with the dry mixture. Continue to mix until you get the consistency of a soft dough.

Roll a pearl-sized amount of dough between your hands into a ball. Slightly flatten the balled dough before placing on a cookie sheet.

After placing dough onto cookie sheet, sprinkle some Sugar and Cinnamon over the top of each cookie.

Bake the cookies for about 8-10 minutes, or until a light golden brown. Allow it to cool before serving.