– 1 cup unsalted butter melted – 1 cup granulated sugar – 1/2 cup brown sugar – 1 teaspoon vanilla extract – 1 large egg room temperature – 1 egg yolk room temperature – 2 3/4 cup all-purpose flour – 1 1/2 teaspoons Cream of tartar – 1/2 tsp baking soda – 1/4 tsp baking powder – 1 teaspoon salt – 1/4 cup granulated sugar – 1 tablespoon cinnamon