Somewhere in between shortbread and a biscuit. Great to put in a biscuit tin and have with a cup of tea.
55g caster sugar
180g plain flour
Heat the oven to 190C/375F/Gas 5.
Beat the butter and the sugar together until smooth.
Stir in the flour to form a dough. If it does not come together because it is too crumbly add 1-2tsp cold water and kneed the dough (do not overwork it). Roll the dough into a ball, wrap in cling film and put it in the fridge for 15 minutes.
Roll out the dough on a floured surface to 2-3mm. Cut out fingers or circles and put them on a lined baking tray.
Put them into the oven for about 10 minutes or until they start to go golden. Keep an eye on them because they are thin which means they are easily burned so you may have to take them out before or after the 10 minutes.