I am very much enjoying this clean eating thing
So after quite a bit of experimenting I have found that substituting pumpkin seeds (pepitas) for the nuts, and Unhulled Tahini (which is sesame spread) for the peanut butter works as well. At first I left out the choc chips but upon further testing, I've found that the way they melt into the mixture a bit during the mixing of the dry and wet ingredients actually helps a lot with preventing the muesli bars from crumbling later. I've also found that puffed wheat stays in the bars much better than the puffed millet (probably due to size I'm guessing).
So now the kids have a nut free version to take to school, and a nut version they can eat at home... they seem to prefer the nut version but that hasn't stopped them from eating the entire nut free tray in less than a week.
Hope that helps
Further edit to add - they do cost a bit to make if you buy all organic ingredients, I have to admit that not all mine are organic. Mine probably cost about 70c a bar.
Edited by Orange Underpants, 05 March 2013 - 10:38 AM.