Research and literature in the profession of counselor supervision primarily focus on the development of the trainee and what supervision and supervisors can do to help foster that development. Considerably less attention has been paid to the developmental path of the supervisor or how specific training or experiences in supervision can be used in intentional ways to help influence the development of the supervisor. This article reviews what is known about supervisor development and discusses a specific intervention, the use of a peer consultation model with an intentionally diverse group of supervisors, to enhance supervisor cognitive development.