In a large mixing bowl add the oil, water, sugars and whisk well for 3-5 mins until the batter is combined where the oil and water shouldn’t be separated from each other, it should be thick.
Add the flour, baking powder, baking soda, salt and whisk well until combined. Add the chocolate chunks and stir into the batter until evenly distributed.
Scoop out the batter into balls using an ice cream scoop or tablespoons, at this stage you can chill the dough for 1 hour and bake in a preheated oven at 180°C for 12-14 mins. Or you can bake them immediately without chilling however this will make them spread more.
When you take them out of the oven they will still be soft to touch but dry on the top. Do not try to transfer them immediately as they will be too soft to remove from the tray. Let me cool on the tray for a couple of minutes and using a flat metal spatula remove from the tray and leave to cool on a wire rack for a few minutes before devouring.