Put the red pepper, eggs and basil into a blender. If used, deseed the chilli and remove the veins then chop and add to the blender. Whizz for a few seconds, then add 3 Tbspful of flour and season to taste.
If the consistency is still too runny add more flour ( it should be thick but not sticky). You can also add a spoonful of oil.
Thinly slice the spring onion and mix in with the batter.
Oil and heat a pancake pan. When hot, spoon dollops of the batter into the pan and let them spread into a circular shape. When the surface is no longer runny, turn them over and cook for another minute or so. Transfer them to a plate and make more batches .
Serve them warm or at room temperature.