BACKGROUND:Fostering a community-based approach is one of the United Nations Children’s Fund (UNICEF) strategies to empower the public with the knowledge and tools required for improving the nutritional status.AIM:The current study was conducted to assess the knowledge of mothers/caregivers towards a healthy, safe, and affordable diet and to cover the detected knowledge gap using a community-based approach.METHODS:A pre-posttest experimental design was carried out at a community level at three Upper Egypt governorates: Assiut, Qena, and Sohag over six months from September 2017 till February 2018. In the preparatory phase, 22 non-governmental organisations (NGOs) were selected per governorate, and 15 trainers were prepared at the central level to train 40 trainees from each governorate. In the implementation phase, 11,000 women were approached, 6548 of them agreed to participate in the baseline knowledge assessment: 1774 women from Assiut, 2337 from Qena, and 2437 from Sohag.RESULTS:A significant improvement in the participants’ subtotal and total knowledge scores in all dimensions of nutrition education which are: food economics, food safety, and a healthy diet. The highest percent change was in Assiut 77.1 (69.3: 109.9), followed by Qena 54.9 (27.2: 93.3), and then Sohag 43.7 (31.6: 61.4) which was noticed among the participants from the 3 governorates.CONCLUSION:This community-based approach was a successful intervention to deliver effective health education messages; thus, improving participants’ knowledge regarding food safety, healthy diet, and food economics. It represented the success of NGOs to enhance health and nutrition literacy among the participating women living in underprivileged areas. It is recommended to encourage collaboration with NGOs to move the community towards healthy behaviours.