Mix the butter and sugar in a large bowl with a wooden spoon.

Then add the egg yolk and the vanilla extract and briefly beat to combine.

Sift in the flour and stir until the mixture is well combined - you might need to get your hands in at the end to give everything a really good mix and press the dough together.

Refrigerate for 10 minutes and then roll the dough out so that you can cut the biscuits out in your prefered shapes (use fancy cutters).

Transfer onto a tray that is lined with greaseproof paper.

Decorate with chocolate chips and place in the oven for 15 minutes at Gas Mark 4.

Preheat oven to Gas Mark 4