While the cakes are being baked, prepare the cream. Pour 500 ml of milk into a saucepan, add sugar and vanilla sugar, put on fire until boiling. Pour 2 bags of vanilla pudding into the remaining 200 ml of milk, mix well. Pour the pudding mixture into the boiling milk and, stirring, cook until thickened. then remove from the heat and cover with cling film so that it comes into contact, leave to cool completely.