Put the chillies, tomatoes, coriander and onions intoa bowl and mix together.
Put the semolina and yoghurt in another bowl and mix together.
Season with salt and stir in enough water to make a smooth mixture. Let the mixture stand for about 30 minutes.
Heat a frying pan (skillet) and add a very small amount of oil.
Pour 2 tablespoons of the semolina mixture into the pan and spread it over the base into a thick pancake.
Sprinkle a spoonful of the chopped onion mixture lightly over the pancake and cover the pan.
Cook for about 2 minutes, then remove the cover and turn the pancake over, adding a little more oil and cook for a further 2 minutes, or until browned.
Transfer to a serving plate and make more pancakes in the same way.