Beat the eggs, onion, coriander, green chilli, salt, red chilli, garam masala together in a mixing bowl.
Heat Pan at medium flame and pour some butter. Spread it evenly.
Pour the mixture into the pan, dip 2 bread slices in it and keep them aside.
Dip 2 more slices and once one side is cooked, flip it over and fold the sides.
Place the bread slices that were kept aside on top of it. Apply some butter on side and top.
Cut the sandwich in half and flip it over.
Cook it evenly by applying some butter. Turn off the flame.
Garnish with onion, green chilli, coriander leaves and tomato ketchup and serve it hot.