This is a very easy and tasty sandwich recipe for lunch box and breakfast using canned tuna. This tuna sandwich recipe uses mayonnaise .

Simple Tuna Sandwich Recipe

Bread 6 Slices
Tuna 2 cans
Onion 1 small chopped
Green Chili 1 chopped
Tomato 1 chopped
Mayonnaise 3 heaped tbsp
Mustard paste 1/2 tsp
Salt (not required as tuna have enough salt in it)

You can take any canned tuna sandwich, chunks or flakes. I prefer to heat it before using,
though not required.