A vegan chocolate cake to die for from Nigella Lawson's Simply ... It needs, whatever your concerns, to be dark (minimum 70% cocoa solids for my taste), but if you need this to be absolutely ...

While desserts come and go in the warehouse club's bakery, this staple has won the hearts of many Costco members.

Chill for 2 hours, or until set. Do the same with the dark chocolate and pour over the set white chocolate. Chill for a further 2 hours. For best results, the cake should be chilled overnight to set ...