INGREDIENTS
2 1/2 cups
all purpose flour
1 tsp
baking soda
2 tsp
cream of tartar
1/2 tsp
cinnamon
1/4 tsp
salt
1 cup
unsalted butter
1 1/4 cups
packed dark brown sugar (light will also work)
1/2 cup
granulated sugar
1
large egg
1
egg yolk
1 tsp
vanilla extract
1 tbsp
plain greek yogurt
For the rolling mixture:
1/4 cup
sugar
2 tsp
cinnamon