It is a little of an unconventional pastry method but the result is a delicious sandy texture! We have used this pastry in our kitchen for the last few years.
In a large bowl, with a wooden spoon or an electric mixer, beat together the butter and icing sugar until creamy, combine to it the egg. ( it will be a little split looking but don’t panic.)
On a work surface or a large bowl sieve the flour and make a well. Add the butter and egg mixture in the well and start to combine the flour with the mixture to form pastry dough. Shape in a rectangular shape and wrap in Clingfilm.
Allow to rest for at least 30 minutes.
Roll on a well floured surface, and when lined set in the fridge for 20 minutes before using as required in the recipe.