Mix 225g plain flour, 75g ground almonds, 100g melted coconut oil, 75g maple syrup, 1 tsp ground ginger and 1 tbsp aquafaba together until you have a soft dough. Knead lightly then wrap in cling film and chill for 30 minutes to make it easier to work with.
Sift 100g icing sugar into a mixing bowl. Cut 2 passion fruits in half and scoop out the flesh and seeds. Place in a small sieve or tea strainer over a bowl and using the back of a tea spoon press the juice out. Add the juice to the icing and mix well. If it is too thick add a tiny bit of water.