Combine flour, sugar and cinnamon in a bowl. Add egg and milk. Whisk until smooth. Stir in apples.
Heat a non-stick frying pan over low heat. Spray with oil. Pour 1/4 cup of apple mixture into pan. Gently spread out with the back of a spoon to a 10cm round. Cook pancakes, in batches, for 2 minutes or until bubbles appear on surface. Turn over. Cook for 1 to 2 minutes or until cooked through.