Preheat the oven to 160 deg fan assisted. Line the base of a 9” round loose bottom cake tin with baking parchment.
Cream the butter and sugar together until smooth and well combined with no visible lumps of butter.
200 g unsalted butter at room temperature, 100 g soft brown sugar
Add the sieved Spelt flour, cornflour, and salt if using.
200 g Spelt flour sieved, 100 g cornflour sieved, pinch of salt
Start to mix all the ingredients together, scraping down the sides of the mixing bowl as you go along. The mixture will resemble course breadcrumbs, this is normal, do not be tempted to add any liquid.
Test a portion of the mixture and once it starts to come together in your fingers, place the crumbly dough into the prepared cake tin and press down firmly and evenly to form a smooth base.
Using a knife, slice about halfway through the shortbread dough into equal portions. Using a fork, make rows of holes in each section, this will allow for a more evenly baked shortbread.
Bake in the centre of the oven for 25 – 30 mins, or until baked with a slightly golden colour.
As soon as you take them out of the oven, cut the portions all the way through before the shortbread begins to cool. If needed, use the fork again to make more of a pattern.
Leave in the tin to cool completely before breaking into portions and serving.