Roll the puff pastry into two sheets fitting smaller rectangular pan. Poke a few holes on the bottom of the dough with a fork and bake each sheet in the oven preheated to 180C for about 10-12min or until golden. Leave one sheet in the pan for the base, cut another into serving size squares.
2
Beat egg whites with 100g of sugar very stiff. Mix egg yolks with another 100g of sugar, add vanilla sugar, corn starch, flour and water.
3
Boil milk, stir in the yolks cream and cook over lower temperature until it becomes very thick (about 10min). Remove from heat and carefully whisk in the egg whites foam. Pour the filling in the pan with pastry sheet at the bottom.
4
Beat heavy cream with 100g of sugar and spread over cooled filling. Arrange the pastry square over. Cool. Dust with icing sugar before serving.