Place the 2 tins of coconut milk in the fridge to set the cream. This can take between an hour and three hours depending on much fat is in the coconut milk.
Soak the cashews in hot water for 1 hour.
Process the vegan biscuits and coconut oil in a food processor until fine. Then transfer to a cake tin and press down with a glass for an even and firm base. Leave the cake tin to one side.
Remove the coconut tins from the fridge and scoop out the coconut cream that has settled on the top. Transfer the coconut cream to a blender and discard the coconut water or use it in another recipe.
Add the cashews, maple syrup, juice of 4 lemons, zest of 4 lemons, vanilla extract, and salt to the blender, and blend until smooth. You may need to do this in two batches if your blender is too small to contain all the ingredients.
Pour the cheesecake mix on top of the biscuit base and tap the tin to level out the mixture.
Place the cheesecake in the freezer for two hours so it becomes nice and firm.
Meanwhile prepare the lemon decoration by peeling the remaining lemon, then slicing the peel into 1 mm thick slices.
Remove the cheesecake from the freezer 20 minutes before serving,
Gently remove the cheesecake from the tin and place on a serving plate. Then sprinkle the slices of lemon peel on top.