Reflective supervision is increasingly mandated in evidence-based infant and early childhood programs and is, therefore, experiencing rapid expansion across the United States. The growing interest in reflective supervision has led to new questions about how to train, support, and gauge the competency of supervisors who are supporting and educating providers. However, to date, most research has been qualitative, small-scale, and exploratory in nature with very few defined constructs. This article describes an instrument currently being piloted that was designed to assess the presence and quality of essential process elements of reflective supervision using digital recordings.