The Youth Expanded Food and Nutrition Education Program (EFNEP) is one of the United States Department of Agriculture's hallmark nutrition education programs for limited-resource youth. The objective of this study was to gather opinions from experts in EFNEP and related content areas to identify costs, effects (impacts), and related instruments to develop a cost-effectiveness model (instrument) for youth EFNEP, which does not exist. A cost-effectiveness model determines the economic or financial cost of producing an impact. The findings highlight several challenges in identifying inputs through consensus and provide a roadmap for the creation of a model that can be adopted by state EFNEP coordinators. (Contains 1 figure and 2 tables.)