For loads of information regarding food intolerances, the best place to begin is Sue Dengates FedUp website. The Royal Prince Alfred Allergies Unit also has a great deal of easily digestible (sigh) information, and they publish a terrific cookbook called Friendly Food.
I need to make almost all of our food from scratch, and one of my lunchbox staples is Carrot Oat cookies! It is dairy free (if made with Nuttlex) and low in salicylates - they're also DELICIOUS. If you can tolerate spices, add some cinnamon and they taste like carrot cake. I usually make a double batch and freeze for school lunches. It's incredibly forgiving so you can modify the ingredients to your hearts content - grated pear is lovely, carob chips make them interesting, or bake as jam drops with a blob of pear jam in the top.
Carrot Cookies
Melt together:
170gm Nuttlex (or butter)
2 tablespoons Golden Syrup (or honey)
Combine:
1 cup self raising wholemeal flour
1/2 teaspoon bicarb of soda
1 cup oats
2/3 cup brown sugar
1/2 cup grated carrot (I just grate two carrots)
1/2 cup dessicated coconut
1/2 dark chocolate or carob chips (leave out if you like, or just put a single chip on top)
Mix the melted butter into the dry ingredients. It will be a coarse and crumbly mixture.
Squish spoonfulls and form into balls - press onto your cookie tray - they do not spread much, so press flat if you prefer flatter cookies.
Bake 15-20 minutes at 180 degrees celsius.
ENJOY!