Student retention is important to any university, especially keeping commuter students who are traditionally less anchored in campus life. Even more at risk, given the leaky STEM pipeline, are STEM commuter students. In 2016, Valparaiso University launched the Establishing Practices Integrating Commuter Students (EPIC) program, centered around engaging students in undergraduate research. Students participate in a research laboratory for their four academic years, and take part in one summer of funded research. This program has achieved its goal of providing scholarships, research opportunities, and cohort support to over 30 commuter and residential students while preparing them for research-oriented careers. This article shares successes and lessons learned, along with data demonstrating the program's impact on broadening participation in STEM and increasing retention.