Soak the cashews for 1 hour in boiling water or overnight.
Add the cashews to a food processor with 25 ml plant milk, vanilla extract and maple syrup.
Blitz into a smooth cream and keep aside in the fridge.
Crumble the cake into breadcrumbs, either using fingertips or food processor.
Add the coconut oil, coconut milk, nut butter and cocoa powder and make into dough using hands, smushing all ingredients together.
Once a smooth, cakey dough, place onto a sheet of clingfilm and roll using a rolling pin, flattening the cake lengthways.
Spread the cream onto the cake, leaving the outer edges bare.
Roll the cake from one side, so that the cream is on the inside layer, gently pressing with each roll.
Once rolled, wrap tightly with clingfilm and refrigerate for at least 1-2 hours.
When ready, melt the chocolate with the remaining plant milk and pour onto the swiss roll.
Allow chocolate to cool before serving.