(Although I do have a jar in my cupboard at the moment... Don't tell Mom... :p)
Oddly enough, I didn't know about fluffernutter pie until just a little while ago, reading a cooking blog that's written by a New Englander. Funny what you learn about your heritage when you're no longer in it! In any case, I'll gladly make one for you, if you'd prefer that over the key lime--it'd be a fun challenge :)