Portugese custard tarts

The 15th "best thing to eat in the world" according to the Daily Telegraph, Portugese custard tarts (pastel de nata) were created by catholic monks in the 17th Century. Use ready-rolled puff pastry and you can knock them up in no time - and you'll be glad to hear that they require very little skill (the ones pictured were made by my two-year old twins...).