Method

1.Put the oil, water and caster sugar into a bowl and beat together until smooth and the sugar has dissolved
2.Stir in the flour and make a stiff paste
3.Mould the paste into a sausage shape (~ and cover in cling film, ensuring the sausage is an even thickness throughout.
4.Place the paste in the fridge/ freezer until it has set up to a firm texture, suitable for slicing
5.Preheat the oven to 190°C
6.Remove from the fridge/ freezer and remove the cling film
7.Place on a chopping board and slice into 1cm thick disks
8.Place the disks on a baking tray, prick with a fork and sprinkle with the extra caster sugar
9.Bake in the oven for 15-20 minutes until golden
10.Set aside to cool on a wire rack