Add the butter and sugar to a bowl and using an electric whisk beat together until creamy.
Add in the egg and vanilla and beat again until combined.
Add in the spices, flour, baking powder, and bicarbonate of soda and mix again until all combined. It is quite a solid mixture. Finally, add in your chocolate pieces and mix again.
Place the cookie dough in a bowl, cover and put in the fridge for an hour to chill. Alternatively into the freezer for 30 minutes.
Whilst your cookie dough is chilling preheat your oven to 180C fan or 200C regular. Gas 4.
After chilling, separate your cookie dough into 8 equal sized pieces and roll into balls.
Place the cookies onto lined baking sheets. They spread when cooking so 2 trays with 4 cookies each is best. Or do what I did, bake four & freeze four.
Once baked leave them to cool on the tray for about 30 minutes before eating!