In a medium sized bowl, make a batter by whisking together the milk, first quantity of caster sugar, flour, salt, baking powder and egg until smooth and no lumps remain.
Heat the oil in a saucepan to 150°C.
With a spoon, take 3 pieces of apple and coat together in the batter, making a ‘ball’. With the help of a second spoon, scrape each ‘ball’ into the oil – avoid overcrowding the saucepan. Fry each ‘ball’ until golden brown. Remove and drain on kitchen paper.
Mix together the second amount of caster sugar with the cinnamon powder. Toss the warm fritters in the cinnamon sugar, serve warm with maple syrup.