For the biscuit base, combine ground biscuits with cinnamon and melted butter/margarine.
Spread the mixture at the bottom of a 6 inch wide cake pan.
Combine mascarpone with yogurt, milk, vanilla sugar and gelatin fix for the cream.
Spread half the cream on the biscuit base.
Place the banana slices.
Spread the rest of the cream.
Decorate with jam.
Leave it in a warm place to stiffen.
Good luck preparing! Enjoy!