I tried one more time on the wheat product just in case there was something funny tasting to him in the cookie. I tried giving him licorice which has wheat and he took a bite and didn't like it. Then I tried a few other things he wouldn't try. I think he just knows that there is something in there that he doesn't want or he is so used to his few foods that he gets on a regular basis that if I give him something that is unusual to him he doesn't want it.
The wheat is put on hold, I am going to continue the wheat free diet.