My kids can plow through chewy granola bars like nobody's business. Same with cereal bars. Pretty much anything wrapped and in a box. While they are yummy, they are only one step above a candy bar nutritionally (and have the evil HFCS) and they are expensive. I searched the internet looking for recipes for cereal bars but couldn't find any but I did find some no-bake granola bar recipes. I tweaked it to make it healthier although it is still very sugary. It is very, very easy.
1 cup honey
3/4 to 1 cup brown sugar
1 cup peanut butter
1 tbsp vanilla
6-8 cups dry ingredients
-crispy rice cereal
-whatever else you can think of as long as it comes out to 6-8 cups. I use a base of oatmeal and crisped rice.
Mix your dry ingredients together in large bowl. Heat honey and brown sugar in large pot until boiling and smooth. Turn heat down, add peanut butter and vanilla and stir until smooth. Dump dry ingredients (except chocolate) into sugar/PB mixture. Stir well to coat. If you are adding chocolate let it cool a little before adding. Press finished mixture into lightly greased jelly roll pan.
It would be very easy to make these a GF/CF safe snack/treat/dessert.