For the Cinnamon Swirl: Butter: ¼ cup, softened Brown sugar: ½ cup Ground cinnamon: 1 tbsp For the Cookie Dough: All-purpose flour: 2 cups Baking powder: 1 tsp Salt: ¼ tsp Butter: ½ cup (softened) Granulated sugar: ¾ cup Egg: 1 large Vanilla extract: 1 tsp With a gooey cinnamon center and a perfectly golden cookie shell, these treats are sure to become your new favorite dessert!