Preheat the oven to 160°C/325°F/gas mark 3 and line 2 large baking trays with baking paper.
Cream the coconut oil and sugar in a food processor, then add the egg and vanilla and process again. Sift in the flour, baking powder and a pinch of salt and process until fully combined. Throw the chocolate chunks into the dough and process for 30 seconds so the chunks break down a little and are mixed into the dough.
Roll the dough into walnut-size balls and place on a baking tray about 5cm apart. Bake for 12–14 minutes until golden around the outside, then remove from the oven and leave on the trays to cool and harden.
Put them on a beautiful serving plate and enjoy with your family and friends!