Research Design: During Phase I of the study, the investigators propose to conduct remote focus groups with autistic individuals (n=15) and with licensed therapists (n=15) in order to identify barriers to mental health treatment for autistic individuals, as well as ways to improve mental health treatment. Based on this information, the study team will develop a prototype of a therapist-facing toolkit that will include strategies for adapting evidence-based treatments when working with autistic individuals. In Phase II of the study, 6 therapists treating autistic clients (n=12) in a community clinic will be randomized to continue treatment as usual or to receive access to the toolkit. Study investigators will collect pilot data to explore whether the toolkit (1) improves therapist knowledge of autism and confidence treating mental health conditions in autistic people, (2) is acceptable to therapists, and (3) improves the acceptability and efficacy of mental health care for autistic adolescents.