Instructions

1. In a large mixing bowl, beat the butter until pale and creamy. Sift in the sugar and vanilla extract and beat until combined. Sift in the flour and beat briefly until a soft cookie dough forms. Add Twix bars and stir.
2. Place the dough onto a piece of baking or wax paper and spread out into a long circular roll. Cover with cling wrap and place in the fridge for at least one hour or store in the freezer.
3.  To bake the cookies from the fridge: Slice into 1/2 inch thick pieces and place on a baking tray lined with baking paper.
4. Preheat the oven to 180 C (350 F) standard / 160 C (320 F) fan-forced for 15 minutes or until golden. Carefully transfer to a wire rack to cool completely.
5. To bake the cookies from the freezer: Thaw for 10 minutes, then cut the cookies into 1/2 inch thick slices and place on a baking tray lined with baking paper. Bake at 180 C (350 F) standard / 160 C (320 F) fan-forced for 16-18 minutes or until golden. Carefully transfer to a wire rack to cool completely.