To evaluate the effectiveness of educational interventions and demonstrations of balanced nutrition menus on increasing the knowledge of mothers of toddlers. This study used a quantitative approach with a pre-experimental design of one group pretest-posttest design. The participants were mothers who had children aged 0-5 years and actively participated in Posyandu activities in the local Puskesmas work area. Before and after the intervention, the level of knowledge of respondents was measured using a validated questionnaire instrument, containing 20 multiple-choice questions about the concept of balanced nutritional, types of food, balanced portions, and toddler food processing techniques. The results of the inferential analysis using the paired sample t-test showed that there was a significant difference between the pretest and posttest scores (p < 0.05). Community-based nutrition education programs accompanied by direct demonstrations are highly recommended as a strategy to increase community nutrition literacy, especially in efforts to prevent toddler nutrition problems such as stunting and malnutrition.