Despite the increasing acceptability of promotores (community health workers) delivering interventions, Latino immigrants are still less likely to serve as partners in intervention research. Using a community-based participatory research approach, which equitably involves community members throughout the research process, we partnered with an established community research team, Latinos Unidos por la Salud (Latinos United for Health; LU-Salud). LU-Salud is composed of 17 Latino immigrants (coresearchers), and together we developed and implemented an intervention to reduce stress and increase coping. In this article, we describe the process our team used, including the codesign of the intervention content, sociocultural adaptations for Latino immigrants, and coresearchers’ perspectives about the intervention. Future research can use the LU-Salud process as a potential model to engage hard-to-reach populations as partners in intervention research. (PsycINFO Database Record (c) 2019 APA, all rights reserved)