To make the ice cream, blitz all the ingredients in a blender to combine and then pour into an ice cream maker. Churn according to the manufacturer's instructions and when ready, pour into a freezer container.
Smooth out the top and place in the freezer for at least 4 hours or until hardened.
To make the date caramel, blitz all of the ingredients in a blender until you reach a smooth, caramel consistency and set aside in the fridge until needed.
To build the sundae place a layer of sliced bananas in the bottom of a sundae glass and top with a layer of date caramel. Place balls of cashew ice cream on top and finish with a grating of dark chocolate.
