She loves pasta. Her grandmoms and she eats alot of it - three servings typically when she goes over there. I used as well when I was her age. Doesn't add an ounce to her.
She has variety- she likes lobster and cheeseburgers as her main meal. She eats a variety of fruits; not as much a lover veggies (mostly typical kid veggie likes).
Another bread item she loves are those pillsbury cresent rolls - she will eat a ton of them. And we let her have as much as she wants.
Protein might be a good focus. As any of those - that might be the one she has least of - not that she doesn't like protein things - just not as many servings.