Like any other educational resource, the integration of OER in teaching and learning requires careful thought and support for the teaching staff. The Faculty of Education at the Open University of Sri Lanka approached this challenge with the help of a professional development course on OER-based e-Learning. Modules in the course incorporated the use of authentic learning scenarios with learning tasks that facilitated capacity building in a collaborative manner. This paper reports the impact of this course in shifting their perspectives and practices in relation to open educational practices. In addition to a much richer grasp of conceptual knowledge and skills related to searching, identifying, evaluating and integrating OER, participants developed competencies in designing, developing and implementation of an OER-based e-Learning course.