this is the PB I've been using lately....
GNC - SNACLite Power PB™
I usually put it in a bowl, add about 3-4 Scoops chocalate whey isolate (or casein if you wish) and put em in the freezer. Leave em in there for like 2-3 hours and them put 'em in a ziplockbag for a quick bite to ear. With honey over the top (if bulking), they are awesome...