While community stakeholder engagement is becoming increasingly common in health care, operationalized training materials to support this learner population (community members) are scarce. Instructional design principles were used to create an Open Educational Resource (OER) to support the involvement of community stakeholders in health care research at a university health science center. Prior to the development of this project, a formal group, whose members named themselves Citizen Scientists (CSs), already existed to offer lay perspective on clinical and translational research studies. These CSs are involved in a wide range of active committees within the university’s college of medicine. The challenge of this program, however, is that the CSs require training to engage in these activities (e.g., reviewing research proposals). This design and development research case outlines the instructional design processes, and formative evaluation methods and results of the creation of an OER. While the description of the instructional design processes can be useful for similar project implementations, information on methods and results from the formative evaluation add the following benefits: (a) help community stakeholders to analyze whether projects’ goals have been met, (b) present project aspects that could be improved, and (c) support other communities by creating a model for project evaluation based on similar contexts and with similar project goals.