As autumn creeps in and the days grow darker, few ingredients feel quite as cozy as potatoes, and this recipe of chicken croquettes is a clever way to resurrect leftover mashed potatoes. The dipping sauce casts a spell of bold, herby flavor. These croquettes are not only perfect as an appetizer or quick snack, but can also serve as a satiating main dish when paired with a fresh side salad. Serve on a family heirloom for a haunting effect.