Mumbai Style Indian Jain Sandwich
Vegan margarine spread or veganaise (use if chutney is extremely spicy)
Indian chutney spread - combo of green chilies, water, coriander leaves, lemon juice & sugar all grounded up finely into a paste.
Tomatoes & Cucumbers sliced
Sandwich masala - combo of salt, black pepper, crushed black salt, and some other things - you can get a container of this stuff or just mix together the aforementioned ingredients.
Toast if desired.