In a food processor add the egg, the icing sugar, the melted butter, and the salt. Pulse until just combined.

Add the flour and the water. Pulse until a nice dough is formed. Cover and put in fridge for half an hour.

Roll dough between 2 pieces of plastic wrap using a rolling pin

Cut in shapes using a cookie cutter. Place the sablés on a tray covered with parchment paper.