They sell them at many of the ice cream carts and they are delicious! They are also vegan (dairy-free) which is nice for me!! They are one of my favourite WDW treats!
I search for these every trip, and they are easier to find at DHS (MGM) at the ice cream carts. They are much harder to find in the other parks. Sometimes I will go a whole trip and never find them at the others.
I think back in Sept 06 it was from a cart not too far from the area where you start to walk up to get the train to Rafiki's planet watch, there were quite a few stalls and things around there at the time if I recall.
Apparently they are delicious but they look grotesque!
I LOOOOVE frozen bananas. I haven't had one at WDW because we usually get Mickey bars. I used to get them in Ocean City, MD when we vacationed there every year. It's been 3 years since we've been there in the summer so I'll have to get one in Nov at WDW.