Step 1

Preheat oven to 375F. Whisk the flour, baking soda, cream of tartar, salt, and cinnamon together in a large bowl.

Step 2

Cream the butter in the bowl of your stand mixer fitted with a paddle attachment. Add the sugars and beat until light and fluffy.

Step 3

Add eggs on at a time while mixing on low. Scrape the bowl down and mix in the vanilla

Step 4

Add the flour mixture to the batter and beat on low until just combined. Scrape the down down and fold in any remaining flour.

Step 5

In a medium bowl mix sugar and cinnamon together for rolling.

Step 6

Use a medium ice cream scooper or tablespoon to portion out the cookie dough. You'll want enough to roll balls that are 1.5-2 inches wide.

Step 7

Roll the dough in the palms of your clean hands then roll in cinnamon sugar.

Step 8

Transfer to a parchment-lined baking sheet and bake at 375F until puffed and just golden, about 10 minutes. Remove from oven and allow to cool on baking sheet for 5 minutes then transfer to a wire rack to cool completely