it's been a long time since i've had a PB sandwich. i was thinking about it for awhile & thought that we (brother & i) never had a fluffernutter sandwich. and further thinking led me to think about a PB/marshmallow fluff/chocolate hazelnut spread sandwich. (probably not the first person to think of that.)
first had the fluffernutter; it was OK (PB with honey is better). the trick is to have a thick layer of both the PB & the fluff.
then today did the cocohazelnut-fluffernutter (i guess that's what it could be called) & it was OK too, but neither are anything to repeat.