These are so good and everyone should make them for their Moms and Grans, they will be eternally grateful. This makes a lot of shortbread so halve the recipe if you need to.
500 g salted butter
250 g (1 cup) brown sugar, it must be brown sugar
1 kg of flour
Heat the oven to 170 celsius
Cream together the butter and brown sugar. Add most of the flour, leave about a 1/4 cup aside and mix well(no need for the gym afterwards). Flour the surface with the remaining flour and knead well for about 5/6 minutes until the dough is soft. If need be add a little more flour to the surface.
Roll into about a 1 1/2cm thick slab and cut into squares or any shape you like really and place them on a non stick, ungreased baking tray.
Bake for 20 minutes and let them cool. Every time you hand them over you are scoring.