2 cups all-purpose flour ¾ teaspoon baking powder ½ teaspoon baking soda ½ teaspoon kosher salt 1/2 cup butter 1/2 cup granulated sugar 1/2 cup packed light brown sugar 1 large egg 1 teaspoon vanilla extract ¼ teaspoon peppermint extract 3/4 cup white chocolate chips 1/4 cup finely crushed peppermint candy canes