The pivot to online teaching during the pandemic brought new challenges for instructors teaching large classes. In response to instructors' need for additional support with engaging students online, two educational development units collaboratively designed the Teaching Exchange. The Teaching Exchange was a virtual series of sessions on different topics where instructors teaching large classes (150+ students) could share their classroom experiences and instructional strategies with one another. We designed and facilitated the series in a way that was responsive to the pandemic circumstances and offered instructors an experience based around community and sharing teaching ideas. The exchange drew 83 instructors from across nine faculties at our university. The Teaching Exchange brought together knowledge experts with diverse perspectives to create a space for rich, nuanced dialogue about the complexities of teaching in higher education. Recognizing the value of informal discussion amongst instructor peers, we describe our transferable process for fostering a cross-disciplinary learning community built on the exchange of practice-based experiences. There is potential to adapt this process to support instructors, whatever their class size and learning environment.