Chop your tomatoes very thin and onion into cubes. Cut coriander and chilli into pieces. Place all of them in a large bowl

Add your tuna into the bowl

Add salt and pepper into the mixture and mix thoroughly.

Cut your bread into two in the middle with the largest surface area

Place the mixture on the bread and grate cheese all over it

Pour chilli sauce and olive oil on the bread

Heat 2 minutes in the microwave on medium power

Bonne appetit !!