This was a request by a flatmate. I grew up eating vanilla slices and I always loved them, but I hadn't had one for years. They're not the best thing to eat in public because of the tendancy for the custard to squish all over the place when you take a bite. These ones were enjoyed in the privacy of our home, and with the assistance of forks.
This was definitely one of the best vanilla slices that I've had. The recipe is from Donna Hay in the Sunday Mazagine's ANZAC Day special. It called for custard powder, but I swapped it for cornflour, vanilla bean paste, and a few drops of yellow food colouring. The passionfruit icing isn't essential, but I highly recommend it.