The present study examined resiliency, mental health, and social skill outcomes in young adults with High Functioning Autism Spectrum Disorder (HFASD) following completion of the Program for the Education and Enrichment of Relational Skills for Young Adults (PEERS-YA; Laugeson & Frankel, 2015). PEERS-YA is a 16-week manualized, evidence based, and caregiver-assisted social skills intervention designed to help young adults with HFASD to develop and maintain relationships. Measures of anxiety, depression, and social skills were examined 16 weeks prior to beginning of the program (T1), one week prior (T2), and one week after completion of PEERS-YA (T3). Additionally, measures of resiliency were examined at T2 and T3. The results indicated significant improvements in parent-reported social skills; however there were no significant improvements in anxiety, depression, resiliency, or self-reported social skills following completion of PEERS-YA.