How to make
The quantities listed are approximate because they depend on the size of the container you're going to be making the cake in.
Heat a little milk in a wide container, put the biscuits in it to soak and soften from the milk.
Then arrange them in the oven dish next to each other - they need to form a densely packed biscuit layer. Then cover them with a 3/32 layer of cream. Next comes another layer of biscuits. Put a layer of round banana slices on top and then cream again. The last layer is biscuits and cream again.
Grate the chocolate on the very top.