Preheat the oven to 180 ° C. Prepare a baking tray with baking paper and set aside.

In a bowl, using electric beaters, beat the softened butter with icing sugar and vanilla essence until smooth and creamy.

Sift the cornflour and flour into the mixture and combine into a dough.

Take a spoonful of the mixture about 3 or 4 centimeters wide and roll into a ball in your hand. Place on the baking tray and press down with a fork so it flattens to about 1.5 cm thick.

Once your tray is full, bake in the oven for 15 minutes.

Cool the cookies completely on a wire rack before filling them.

For the filling : in a bowl, beat the butter and icing sugar. Add the passion fruit and combine. Taste the filling and add more passion fruit if you like.

Spoon a teaspoon of filling onto a biscuit and sandwich onto another biscuit. Enjoy with coffee or tea! Store in an air tight container.