First we will make stuffing for the sandwich. To do this, add oil in a pan and heat it, then add mustard seeds, cumin seeds, add sweet curry leaves, asafoetida, chopped green chillies and turmeric powder, mix well and fry on slow flame of gas.

Now add small pieces of boiled potatoes in this mixture and saute for 2 to 3 minutes. Now add salt, ginger-garlic paste to this mixture and saute. Now mash the potatoes with a masher.

Now add boiled green peas, finely chopped coriander, lemon juice and pav bhaji masala and mix everything. Now turn off the gas flame and let the mixture cool down

Then spread the butter on the sandwich bread. Then apply green sandwich chutney on it. Then spread the potato filling on this chutney. Now sprinkle sandwich masala and pav bhaji masala on it.

Now place a slice of tomato, rings of capsicum, slice of onion on this bread, sprinkle sandwich masala on top and place a square slice of cheese on it.

Now apply the green chutney on the second slice of bread and place it on the prepared sandwich bread. Press on top and apply butter on top.

Now grease a gas toaster with butter on a slow flame of gas and arrange this made sandwich in it and toast it. Open it a few times and keep watching so that the bread does not burn. (This toast sandwich can be made in a nonstick pan if you don't have a gas toaster like this.)

Now our masala toast sandwich is ready to serve. Immediately spread butter the hot sandwich. Now put green chutney, tomato sauce on this sandwich, garnish with besan sev and green coriander leaves. Cut the toast sandwich with a knife to your liking. Serve this masala toast sandwich with green chutney and tomato ketchup.