This makes about 15 cookies of 2 cm square size. You can double the recipe.
You can use light or dark brown sugar .
These keep well for 5-6 days in an airtight container.
The dough might be soft and irritation to roll out : fair warning !
You can also skip the chilling and press the dough onto the bottom of a parchment lined 7 inch round pan. Poke holes all over . Bake at 180 C for 15-16 minutes. Once out the oven, cut into wedges while still hot and then cool completely in pan.