Step 1

Base: Combine flour, sugar and egg. Add melted butter and combine.

Step 2

Place mixture into a lamington tin.

Step 3

Cook at 180C for 15 minutes. Leave to cool.

Step 4

Filling: Combine condensed milk, cream and lemon juice. Mix well and pour onto base. Chill for about an hour.

Step 5

Topping: Place custard powder, water and sugar into a saucepan. Stir over heat until thickened.

Step 6

Add passionfruit pulp and stir to combine.

Step 7

Pour over the top of slice.

Step 8

Refrigerate for 2 hours or, preferably overnight, to set.