Family-based treatment has for at least two decades now come to be seen as the treatment of choice for adolescents with anorexia nervosa (AN). Yet, involving the parents in the treatment for adolescents with bulimia nervosa (BN) have remained largely unexplored. We have recently adapted manualised family-based treatment for adolescent AN (FBT-AN) to a large group of adolescents with BN (FBT-BN). This manuscript will highlight the key tenets of manualised FBT-BN, briefly describe the three treatment phases, and summarise the main differences of this model in its application for AN versus BN. Finally, reference will be made to the first randomised controlled trial of FBT-BN showing preliminary support for the parents' involvement in the treatment of adolescent BN.