In Latin America, cooperatives have proven to be powerful change agents, strengthening the longer-term sustainability of peasant agriculture to decrease vulnerability. In Colombia, the IMPACT project provided support to cooperatives, like Coocampo, in their development process. IMPACT's work was guided by a gender equity and empowerment approach to international development. This paper examines learning that resulted from participation in IMPACT's gender equity strategy, as realized through Coocampo activities. This qualitative case study examines how a critical transformative-learning focussed approach to gender in development, one incorporating women and men as change agents, created a shift towards a more equitable sharing of livelihood income; greater female participation in Coocampo activities and governance; and in some cases, a transformation of participants' perceptions of their roles as women and men, of themselves, and of their possibilities in life. Scholars call for ways for men and women to work in solidarity towards gender justice. This study contributes by presenting findings where a comprehensive approach was taken to enable gender justice by working towards women's empowerment and re-defining gender roles, and by working to improve economic security for families in an equitable way.