protein bars for kids

the girls will be starting preschool soon. 23 days, but who's
counting. alix is not much of a breakfast eater and 99 percent of her
behavioral problems stem from what she eats and not getting enough
sleep. anyone have suggestions for bars that kids like that aren't
loaded with sugar and have some protein? i see Skippy makes pnb bars
but haven't gotten any so i don't know how they taste, etc. she's not
a big fan of pnb but does like cashews and pistachios.

open for suggestions.

pam