GP, I am so sorry about the failed pizza challenge.
Both of my kids failed that one a year or so ago. Milk is such a hard allergy. Its really difficult to not get your hopes up. Our allergist insists that eating baked milk is very important. I admit that I do not make the muffin recipe (let me know if you'd like the recipe) they gave me often enough but my kids do eat Nurtigrain Bars, Original Gold Fish, English Muffins, Aunt Jemima French Toast Sticks, etc. DD is very adverse to eating the muffins - she convinces herself that she will react. She has not.
DS is going for anther pizza challenge in August after failing a milk challenge in January.