Layer another pack of the Lattice Biscuits over the custard. If you have cut some of the biscuits in half like I have, ensure your top and bottoms line up, otherwise it will be difficult to cut. Chill for 30 minutes and prepare the icing. The recipe calls for 1 1/2 cups of pure icing sugar and 2-3 tablespoons of passionfruit pulp but I honestly thing you could cut the icing ingredients by half.
Here is the finished result that I plan to take to work tomorrow. This Easy Vanilla Slice is great for barbecues, morning teas etc as they are so quick and easy to make, this might actually become a part of my regular food offering.