Healthy Beef Burgers

I found a recipe for meatballs for babies that used iron fortified rice cereal instead of bread crumbs and it was very good, so I thought...why not burgers? Then I was inspired to make it even healthier and my picky kids loved the results. Me, I still prefer my old recipe, but hey my kids like it and that is what counts. I am guessing at the amounts, I usually just eyeball it.