Lynn based on what you said here is what I would suggest- if you don't have a crock pot get one, you should be able to get a decent 6 quart one for $30-$40 at Target. Make a whole roast chicken in it at a time so you have plenty of chicken since that what he likes. Make a gravy with the juices if you can they have a lot of gelatin in them that is very gut healing. If you save the bones after a few chickens you will have enough to make stock which is great for gut healing too but if that is too cooking intensive ignore that for not. Buy lots of the veggies he likes (not sure if beans are green beans or kidney beans and such) he needs to have them frequently to get fiber in his diet, try serving some raw carrots, cucumbers, bell peppers ect with his meal if there is any chance he will eat it and they wont' cause him to reject the whole meal. For breaded chicken coat boneless chicken by soaking it and beaten egg and then rolling it in almond meal, salt, and pepper and fry it in organic coconut oil (can use another oil too but coconut oil is really good for gut healing). My kids will eat this as a packed lunch or dinner they dont' seem to care that it's not heated. Buy a few things that are naturally gluten free that he likes - if he eats fruit, buy a lot of it, plain potato chips usually are gluten free (check labels) costco has some good apple chips if he likes those. You also need something for breakfast, will he eat eggs with bacon or sausage and fruit, or maybe hashbrows with eggs or some kind of meat? You should be able to find casein free spaghetti sauce and Tinkyada makes pretty good GF spaghetti noodles. Start with these foods. Expect him to be very hungry and not feel satisfied and want to snack tons on foods he likes and can still have. Some kids have other strange reactions or temporarily get worse, but it's a sign the diet is working and you should continue.

I would also buy this book and start going through it for recipes that seem like good bets http://www.amazon.com/Kid-Friendly-Autis...203&sr=8-1

I would suggest either Udi's or Pamelas BREAD mix (pancake mix has casein) for bread, but I would not intro GF bread until he's a week or so into the diet or it will taste too weird. Same with any cheese subs, wait awhile or they will taste way too strange.

There are lots of premade GF stuff and GF treat recipes which is great of not feeling deprived but for the best nutrition I would focus on foods that are healthy and naturally GF, fruit, veggies, beans, meat, nuts (raw - be careful with roasted) ect.