You don't always have to hide ingredients to get kids interested in healthy eating; sometimes, cooking with your children will whet their appetite for nutritious food. According to behavioral scientists, picky eating is often a control issue. Children who have a hand in making foods tend to be much more amenable to eating what they themselves took part in, rather than something that they're served and can therefore simply accept or reject. Even kids as young as 3 or 4 years old can help with meal preparation by tearing lettuce for salads, spreading peanut butter on whole-grain bread and adding dry ingredients. Older children can cut vegetables under adult supervision, grate cheese and measure out liquids. During the meal, make a special point of acknowledging the child's help -- everyone should know that they're eating Sasha's salad or Jamie's meatballs.