– 1 stick (8 tablespoons) salted butter – 1/2 cup packed light or dark brown sugar – 1/4 cup granulated sugar – 1/3 cup pumpkin butter – 1 large egg – 2 teaspoons vanilla extract – 1 3/4 cups all-purpose flour – 1/4 teaspoon baking soda – 1/4 teaspoon baking powder – 1/2 teaspoon ground cinnamon – 1/2 teaspoon kosher salt – 1/2 cup white chocolate chip – CHAI SUGAR – 1/3 cup granulated sugar – 2 teaspoons ground cinnamon – 1 teaspoon ground ginger – 1/2 teaspoon ground cardamom – 1/4 teaspoon freshly grated nutmeg – 1/4 teaspoon all-spice – 1 tiny pinch black pepper