President makes surprise appearance at lunch for healthy eating contest winners . Obama made the rounds of the room , greeting young guests and their parents . Healthy Lunchtime Challenge is recipe contest and part of first lady 's Let's Move initiative to encourage children to eat healthier meals in school cafeteria. Tuesday 's menu featured many of the winning recipes .
President makes surprise appearance at lunch for healthy eating contest winners . Obama made the rounds of the room , greeting young guests and their parents . Healthy Lunchtime Challenge is recipe contest and part of first lady 's Let 's Move campaign . Tuesday 's menu featured many of the winning recipes .