Preheat the oven at 200° C on the resistances

In 50 ml of milk add sugar and corn flour, 2 yolks, vanilla and zest and mix

Boil the rest of the milk and add the ingredients you mixed

Boil for 3 minutes while stirring and remove from heat

Lay the puff pastry on a floured surface and sprinkle a little flour on top

Press it a little with the rolling pin and cut it into 7.5 cm disks

Butter and place the buttered side down in the muffin tin and press down to sit well

Fill with a tablespoon of the cream

Bake for about 20 minutes

Sprinkle with icing sugar