This classic tuna melt can be made in a frying pan! If you like a little more texture to your toastie, it also works well with a tablespoon of finely diced celery folded through the filling.
80g tinned tuna, drained
1 spring onion, thinly sliced
1 heaped tsp diced red onion or shallot
50g/1¾oz extra mature or mature cheddar, grated
1 tbsp mayonnaise
tiny squeeze lemon juice
2 thick slices white or wholemeal bread
1 tbsp butter, softened
1 tsp olive oil
salt and freshly ground black pepper
