Top tuna with cheese, packing it on generously, and slide sandwiches under broiler. Broil until cheese melts and bubbles, 4-5 minutes. Remove tuna melts from broiler and serve immediately.
Stir in the tuna, onion, olives and capers. Divide the tuna mixture between 4 bread slices. Top with the lettuce and remaining bread slices. Tip: This recipe can be halved to make 2 servings.
I think ordering a tuna sub is always going to be a bit of a risk. Will the fish taste fresh enough? Will the mayo be slapped on too heavily? Will the whole sandwich be a mess? However ...
Use a fork to flake apart the tuna and mix everything together. Add the mayonnaise, lemon juice, lots of pepper and a little pinch of salt and fold together. Sandwich the filling between the two ...