Pour custard into the serving dish
Spoon 1/4 cup granadilla pulp onto the top of the custard, mix in with the back of the spoon
Cut pastry to fit the serving dish with a very sharp knife and add pastry to the top of the custard
Press down gently so that some of the pastry is in the custard
Ice top of pastry with granadilla icing
Let sit in the fridge for at least 2 hours before serving
Basically it can be made as simple as - make puff pastry dough according to packet, make thick custard according to packet replacing 1 cup milk with cream, add granadilla to the top of the custard, make simple granadilla icing and layer together.
Granadilla Vanilla Custard Slice https://demandafrica.com/food/recipes/granadilla-vanilla-custard-slice/