Just about to have cheese on toast for the first time in about a year (have a working grill now). How would you have yours - with some sliced tomato, with a splash of Worcestershire sauce (Special Edition) or just plain old cheese?
Plain (strong-flavoured) cheese is fine but any of the following add well to it:
Freshly ground black pepper ;
Cayenne pepper ;
English mustard ;
French mustard ;
Dark soy sauce ;
Lemon juice.
To turn it into a full meal, rather than a snack, adding some baked beans and/or rashers of bacon goes well. Alternatively put some grilled sardines on top.