Step 1

Preheat oven to 300 degrees

Step 2

In a large bowl add butter cubed

Step 3

Place large sieve over the bowl and add flour and icing sugar to sieve

Step 4

Run flour and icing sugar through sieve to ensure well blended and no lumps

Step 5

Blend by hand the icing sugar and flour into the butter until it forms an oatmeal like texture

Step 6

Knead mixture to form a large ball

Step 7

Bake for 30 minutes or until cookies are firm to the touch and only just starting to brown on the bottom

Step 8

Remove cookies from the oven and using a sharp knife cut into even squares. Let cool completely before eating.