Step 1

Preheat oven to 375 degrees F.

Step 2

In a small bowl, mix together 2 TBS sugar and 1 ½ tsp cinnamon. Set aside.

Step 3

Sift flour into a medium bowl.

Step 4

Add cinnamon, cream of tartar, baking soda and salt and stir to combine. Set aside.

Step 5

Cream together butter, shortening and sugar in the bowl of a standing mixer fitted with the paddle attachment (or with a hand mixer).

Step 6

Add egg and vanilla and beat again until smooth.

Step 7

Add dry ingredients and stir until combined.

Step 8

Use a 2 TBS cookie scoop to measure dough, then roll it into balls.

Step 9

Roll each dough ball in the cinnamon sugar mixture until it’s evenly coated.

Step 10

Place cookies on a baking sheet, either ungreased or lined with parchment paper.

Step 11

Bake in the preheated oven for 8-10 minutes until puffed and mostly set, but still soft.

Step 12

Remove from oven and transfer to a wire cooling rack to cool!