firstly, in a large mixing bowl mash boiled potatoes.
also add in chopped onions.
furthermore, add crumbled paneer.
also add chilli powder, chaat masala, mixed herbs and salt.
mix and mash the potatoes well.
further take bread slices and spread green chutney and tomato sauce.
spread the generous amount of prepared potato stuffing.
cover with the other bread slice and press gently.
then grill or toast on tawa adding some butter.
spread butter on both the outer sides of bread to make sandwich more crispy and golden.
furthermore, close the griller and grill till the cheese melts and bread turn golden brown.
now cut the bread into half and serve.
finally, serve hot or pack for kids lunch box.