Make masala or stuffing for sandwich for this, heat Oil in a Pan, when oil gets heated add Onion, 1/4 tsp of Termeric Powder and stir it.
add Tomatoes, Green Chillies, Garlic and Ginger paste, 1/2 tsp Red Chilli Powder, Garam Masala, Sugar and Salt to taste and stir all things very well now in this put Potatoes.
Mash the potatoes with Spatula slowly-slowly now is ready so turn the heat off, in this add Lemon juice and freshly chopped Coriendar Leaves and mix all the things very well and continue to mashing potatoes, we don't need any big chungs of potatoes.
Now is ready so take it out in a bowl.
Take 2 slices of Bread apply little Butter on both, put 1 big spoon masala on Both, spread masala equally.
Take another two slices of Bread again apply some Butter but this time apply very little butter, now put these bread slices on to the previous slices of bread, gentally press it with hands so you can get equal Masala in every bite.
Put the Sandwich in Toaster for toasting, when Red light of toaster changes to Green then sandwich will be ready, so now it's ready turn off toaster and take it out.
Divide it into two parts, and serve it with Green Chutney, Red Chutney or Tomato Ketchup whatever you have.