Preparing puff pastryPreheat oven to 190 degrees and prepare two baking trays or oven thermomatsPlace a sheet of pastry onto each of the trays or matsPlace into oven and bake for approx 10 minutes or until golden brownRemove and let coolCustardPlace sugar and cornflour into bowl for 4 seconds on Speed 5(This is a variant to the existing custard recipe in Cookidoo, you can look up custard and increase quanitites from cookidoo recipe if you would like guided cooking)Add milk, vanilla and eggs and mix for 5 seconds on speed 4Cook for 10 minutes, 90 degrees, speed 3Scrape down sides with spatulaCook for another 5 minutes, 90 degrees, speed 3 so that the custard can thickenPlace one piece of puff pastry into a tin cooked side up.Pour custard over pastry and top with the second sheet of pastry cooked side up.Place into fridge to set (2-4 hours)IcingOnce slice has set prepare icingPlace icing sugar into a bowl and add a few drops of food colouring and one tablespoon of water at a time. You may need to keep adding more water, you want the consistency to be firm but spreadable.Pour over the vanilla slice and place back into the fridge to set (3-4 ours or overnight)Cut and serve once set