Take 2 bowls. Now break the eggs one by one and separate the egg whites and egg yolks in 2 different bowls. Now beat the egg whites very well with salt and pepper until it becomes very foamy. Also beat the yolk part separately.

Now add half of the chopped spinach with the well beaten white foamy Part of the egg. Mix well and also add the yellow mixture of the egg to it.

Now in a heated frying pan, add oil. Then add onion and green chillies. Saute for 1-2 minutes until the onion become translucent. Then add the rest of the chopped spinach and cook well for another 2 minutes.

Finally add the full egg mixture to the frying pan, spread it and level it. Allow it to cook for 1 minute in medium to high flame. Then add the cheese slices in one side of the omelette. Cover and cook for 7 mins in low to medium flame.