Great recipe!...not too sweet, crumbly, or sticky. Next time I'll try adding some honey. Mix wet & dry ingredients in separate bowls to ensure uniform consistency once combined. I also had to bake a good half hour (total) because the bars were far too moist after the first 15 minutes. Probably due to the 16 oz jar of natural PB I used (NO hydrogenated oils-just good ol' peanuts, peanut oil, & salt). BTW-ounce for ounce, natural PB has more protein and less sugar compared to the hydrogenated junk (JIF, Skippy, etc.) I nuked the PB to aid in mixing. Also ground the flax seed. This helped a lot.