Mix grated onions, grated cheese, salt to taste, chopped green chillies and pepper in a bowl separately.

Put this mixture on the slice of the bread to which the sauce has been applied. 

Now place another slice on top of it.

Heat the pan and pour some refined oil in it.

Place the sandwich on the pan.

Turn the face of the sandwhich once toasted.

Serve it with Sil chilli villi green sauce.