In a bowl, mix together first 9 ingredients. Mix well and marinate the mince for 1 hour.

Heat oil in a sauce pan or kadhai. Add the marinated mince and cook on high heat for 30 seconds by stirring constantly.

Cover and cook on low flame till the mince is fully cooked. Dry out the liquid if any by cooking without lid.

Then add last seven ingredients and cook on high heat for 1 minute. Stir well, check the salt and adjust all the spices.

Remove from heat and cool it before using it as a stuffing.

Beat the eggs in a bowl with a pinch of salt and make a thin omelet. Cut into two halves.

In a bowl mix together 3 tbsp mayonnaise and 1 tbsp mustard sauce

Place 2 slices of bread on a flat surface.

Spread some mayonnaise mustard mixture on each bread slice as needed.

Place the lettuce leaves, tomato slices, omelet sheets, cheese slice and finally 2 tbsp of cooked mince on each slice.

Place other 2 slices and complete the sandwiches.

Spread butter on the top of the sandwich and toast it in a pan, or a sandwich toaster.

Cut the sandwich diagonally and serve hot.