Take the cookie dough out of the fridge and leave to soften at room temp for 30 minutes.
Meawhile preheat your oven to 180°C / 350°F / Gas Mark 4 and line two large, flat baking trays with greaseproof paper.
Take two heaped tablespoons of cookie dough and use your hands to roll it into a ball. Place on the baking tray and do not flatten. Repeat for all 10 cookies.
Leave space between each cookie ball on the baking trays so they have enough room to spread out.
Bake for 10-12 minutes. The middle of the cookie should be super soft and underbaked, but the outside edge of the cookie should be firm and set.
Leave to cool and firm up on the baking tray for at least 15 minutes.