ABSTRACT Recent international calls have been made to build capacity in engineering by increasing the number of scholars using research-based instructional practices in engineering classrooms. Training traditional engineering professors to conduct engineering education research (EER) supports this goal. Previous work suggests that engineering professors interested in performing social sciences or educational research require structured support when making this transition. We interviewed 18 professors engaged with a grant opportunity in the United States that supports professors conducting EER for the first time through structured mentorship. Thematic analysis of interview data resulted in four findings describing common perceptions and experiences of traditional engineering professors as they begin to conduct formalised EER: motivation to conduct EER, institutional support and barriers, growth in knowledge, and integrating with EER culture. Within these findings, barriers to entering EER were uncovered with implications for professors interested in EER, funding agencies, and prospective mentors, resulting in suggestions for improving access to EER for professors developing as teaching scholars.