For the Greek Nana Ice Cream Cup, first finely blend the bananas with honey for the ice cream.
Mix the chopped walnuts with the honey.
In a glass, first pour a thin layer of Greek yogurt, then half of the honey walnuts, then the banana ice cream, the second half of the honey walnuts and then Greek yogurt again.
Garnish the Greek Nana Ice Cream cup with the whole walnuts.