This document discusses employing service design and systems thinking approaches to support collaboration across stakeholders in food security. It summarizes the goals of the IKNOWFOOD project which involves researchers from multiple disciplines studying various aspects of the food system. Service design was brought in to help change consumer behavior towards more sustainable consumption. Two student apps were created, one to reduce food waste and one to increase awareness of "food miles". While data collection on resilience was a focus, systems thinking approaches could help integrate perspectives and address tensions between stakeholders in food production, supply chains, and consumption. Designers are positioned as thinkers who can support necessary changes through collaborative problem framing and intervention design.