Sometimes, those little picky eaters just won't eat certain food's like those vitamin and mineral rich vegetables.Well sauces can be a great way to introduce those little ones to some new foods. Finely chopped, minced or grated vegetables can be added to sauces and they won't even know it.
Start out with a small amount and experiment. If they didn't notice, maybe you can add a little bit more the next time. Try tomato based sauces. White sauces can be full of butter and/or creams and too high in fat.