Background and Objectives: Numerous traditional and innovative approaches have been employed to understand and evaluate children’s food preferences and food and nutrition knowledge, recognizing their essential role in shaping good nutrition. Drawing as a projective technique allows children to express their unconscious thoughts and preferences through visual representation, distinguishing it from other methods by providing an insight into their inner feelings and perceptions that may not be easily articulated through verbal techniques. The main goals of the study are to use drawing as a projective technique to gain insights into children’s food preferences, and to examine the children’s current nutrition knowledge and dietary perceptions. Methods: This study involved school-aged children from four public schools in San Jose City, Nueva Ecija, Philippines, who met the inclusion criteria and provided parental consent and the children’s permission. Data collection included (a) questionnaires to measure food group and food frequency knowledge, the children’s opinions on food healthiness and likability, and (b) a drawing activity as a projective technique. The questionnaire scores and the specific foods on the children’s drawings were entered into an electronic worksheet and analyzed quantitatively. Results: The majority of Filipino school-aged children have a low (50%) to average (43%) level of food group knowledge and an average (62%) to low (32%) level of food frequency knowledge. The children can identify the healthiness of the food, but they express a liking for both healthy and unhealthy options. The children’s drawings showed a low preference for Glow food groups, including fruits and vegetables (47%), as compared to Grow foods (94%), Beverages (89%), and Go foods (85%) groups. “Rice and Egg”, the most paired items, indicated a preference among Filipino children. Gender-based analysis showed girls favored “Ice Cream”, “Bread”, “Apple”, and “Oranges” more than boys, but there were no significant gender differences found in Grow food group preferences. Conclusions: Children’s drawings are an effective, valuable complementary tool for understanding children’s food preferences, displaying the value of creative methods in gaining unique insights. The results highlight specific gaps in knowledge, such as the need for a better understanding of food groups and the importance of fruits and vegetables among children. Addressing these gaps in educational programs could enhance children’s food knowledge and encourage healthier dietary choices. Nutrition education programs might use interactive activities focused on food groups and emphasize the benefits of fruits and vegetables to promote better dietary habits for the improvement of children’s long-term health outcomes.