INGREDIENTS
1 cup
unsalted butter
2 cups
plus 2 tablespoons all-purpose flour (see Cook's Note)
1 tsp
baking soda
1 tsp
cream of tartar
1/4 tsp
fine salt
1 cup
plus 2 tablespoons granulated sugar
1/4 cup
packed light brown sugar
1
large egg
2 tsp
ground cinnamon