It looks like Honey Stinger Waffles don't have nuts.

http://shop.honeystinger.com/product...er-Waffle.html

And it looks like some flavors of Clif Bars don't have any nuts, though clearly there are nuts in their processing facilities.

http://clifbarstore.com/products/clif_bar/clif_bars

I'm pretty sure Nancy Clark's Sports Nutrition Guide Book includes a recipe for homemade granola/sports bars.

http://www.nancyclarkrd.com/books/sportsnutrition.asp

And maybe start experimenting with other foods on the bike? If you can have soybeans, maybe a sandwich made with soybean spread and jelly/fruit spread?