The OTTER project aims to create Open Educational Resources (OERs) by transforming existing teaching materials at the University of Leicester into openly licensed resources. The project uses the CORRE evaluation framework to guide the process. CORRE assesses the content, openness, reuse/repurposing, and evidence/impact of potential OERs. Key steps include gathering content from partners, screening for issues, addressing copyright and formatting, validating resources, and releasing OERs to repositories. Tracking data like views, downloads and surveys provides evidence on OER usage and impact. The goal is to sustainably produce high quality OERs that enhance the university's reputation and attract students through knowledge sharing.