This article explores coproduction in relation to autistic people. We reflect on the coproduction process with autistic adults from the Authentistic Research Collective at University College London. We aimed to support the autistic population's mental health needs by coproducing a document on adapting psychological therapy, and by developing a set of reflective guidelines to guide and encourage future coproduction initiatives between autistic and nonautistic team members. We reflect upon six elements that are of potential importance for future coproduction projects with autistic adults: (1) the meaning of coproduction; (2) ground rules and a traffic light system; (3) environmental adaptations; (4) digital communication tools; (5) encouraging authenticity; and (6) supporting autistic strengths. We conclude by discussing future research avenues into optimizing coproduction with autistic people, and how such research may influence both practice and policy.