Preheat your oven to 350 degrees, and line two baking sheets with parchment paper. Set aside.

In a medium bowl, stir together the flour, cream of tartar, salt, 1/2 tsp. cinnamon, and baking soda and set aside.

In a large bowl, beat together the butter, oil, powdered sugar, 1/4 cup white sugar and brown sugar until combined. Beat in the vanilla extract and egg until smooth. Slowly beat in the flour mixture until a dough forms- it will be fairly soft.

In a small bowl, stir together the remaining 1 tsp. cinnamon and 1/2 cup sugar until combined. Scoop tablespoon-sized balls onto your baking sheet with space between. Wet the bottom of glass with water, and then dip in the cinnamon/sugar mix to coat. Then, use the sugar coated glass to press down the dough-balls until they are about 2 inches in diameter, and about 1/4 inch thick. Repeat with remaining dough!

Bake the cookies for 10-12 minutes, or until they are just lightly starting to become golden around the edges. Cool completely on a wire rack and enjoy with coffee or tea!