In a bowl add the oil , sugar and the unsweetened cocoa powder and mix
Add the eggs one by one mix and add the vanilla
Add the flour and the baking powder
Leave for 2 hours in the fridge
take out of the fridge , knead the dough to release the cold and roll into small balls .then roll the balls over the caster sugar
place the balls on a tray with wax paper and put in the oven at 180 degrees Celsius for approximately 15 minutes
Take out of the oven and let cool, enjoy !