Undergraduate research is one of the best practices to improve student learning and has a positive lasting impact on students' career choices and success. Extensive literature review shows that the vast majority of undergraduate research programs focus on Science, Technology, Engineering, and Mathematics (STEM) disciplinary research. This work-in-progress paper presents a new Research Experiences for Undergraduates (REU) Site program that focuses on STEM education research rather than STEM disciplinary research. This work-in-progress paper describes the overall framework of our REU Site program, student recruitment and selection in our most recent Summer 2015 program, and four REU research projects that share a common intellectual focus on self-regulated learning in engineering education. Representative comments from undergraduate student participants are provided to demonstrate the positive impact of this REU Site program.