Remove the skin of boiled potatoes, onion, cucumber, and beetroot.
Now thinly slice/cut the all veggies except spinach and arrange all sliced veggies in one big plate.
Take 2 breads, and spread the melted butter on both breads on one side of the surface.
Apply or spread chutney on one bread and ketchup on another bread slice on top of the buttery side. Repeat the same process and make more slices.
Then place the potato, cucumber, onion, Bell pepper, beetroot and tomato slices over the chutney slices as per your choice.
Sprinkle some chaat masala, black pepper, salt and arrange some chopped spinach leaves over it.
Now place the ketchup slice over it, then press it lightly/gently with your hand and cut it into halves, or cross whatever pieces you want.
Bombay Sandwich is ready, serve it with extra ketchup and chutney and enjoy it with breakfast, meal, lunch, dinner or with a cup of tea.