This treat is an ideal mix of carbs, protein (from shredded mozzarella), and veggies (tomato sauce). And it cooks up in just minutes.
Next-best choice: Whole-grain crackers -- a good option if the word "snack" at your house means something you grab out of a box -- topped with a cut-up slice of cheese.
Picky-eater idea: Well, really, what kid doesn't like pizza? To boost the fun -- and nutritional -- quotient, use cut-up veggies to make a smiley face.