Line an 8" loose bottomed tart tin with cling film
To make the base use a NutriBullet or another powerful food processor to whizz together the almonds, pecans, dates and hazelnuts
Put them in a bowl and add the melted coconut oil, mix it all together, then press the mixture into the tin covering the base and sides. Put in in the fridge for at least 30 minutes to set
To make the date caramel put the dates, almond milk, maple syrup and coconut oil into a pan and boil it for 3 minutes. Let it cool for 10 minutes, then whizz it into a puree with a hand blender
Spread the date caramel into the base, then put it back in the fridge for 30 minutes to set
Chop up the bananas and brush them with lemon juice to stop them from going brown, arrange them neatly on top of the caramel
For the coconut cream, use a food processor or electric whisk to whisk together the hard white top from the cans of coconut milk (discard the coconut water), the maple syrup and vanilla extract
Dollop the cream over the bananas, then grate some dairy free dark chocolate all over the top
Serve immediately, keep any leftovers covered and in the fridge for up to 2 days