Bombay Sandwich

Mumbai's aloo masala toast: soft white bread spread with green chutney and ketchup, stuffed with a spiced mashed-potato filling and melty cheese, then griddled in butter until crisp. Makes 6.

Ingredients

Potato masala

4 medium potatoes, boiled, peeled and mashed
1 T ginger-garlic paste
2 green chilies, minced
⅓ cup cilantro, chopped
1 tsp ground cumin
½ tsp turmeric
1 tsp garam masala
1 tsp Kashmiri chili powder
1 tsp chaat masala
1 tsp amchur (dry mango powder)
1 tsp sandwich masala (optional)
Kosher salt

Assembly

12 slices soft white sandwich bread
Softened butter, plus more for the pan
Green chutney (cilantro-mint)
Ketchup
Grated cheddar or Amul cheese (optional but recommended)

Instructions

Mash the warm potatoes with the ginger-garlic paste, chilies, cilantro and all the spices. Season with salt; it should taste bold.
Trim the crusts if you like and butter one side of every slice.
Spread green chutney on 6 slices and ketchup on the other 6.
Pile a thick layer of potato masala on each chutney slice, add cheese, and close with a ketchup slice.
Butter the outsides and cook in a grill pan or sandwich press over medium-low, pressing gently, until golden and crisp, 2–3 minutes per side.
Rest a minute on a rack so they stay crisp, then cut diagonally.

Plating

Serve hot with more green chutney and ketchup, and a little extra grated cheese on top the way the Mumbai stalls do.

References

https://cookilicious.com/mashed-potato-cheese-sandwich/