Grilled Tuna Sandwich

For preparing tuna sandwich, first slice the buns through middle and keep aside.

Arrange onion, capsicum, tomato and olives accordingly.

Sprinkle salt and pepper in tuna and grill it in pan.

Keep the tuna fillets over arranged mixture and pour the sauces over according to taste.

Slightly warm it in oven. Grilled tuna sandwich is ready.