They are not so healthy if you spread the bread with lots of butter or margarine, so I usually don't use either. Sometimes I use olive oil - you can spread it thinly with a butter knife or use a spray type oil. But mostly I don't use any kind of fat or oil at all. Very healthy!
The sandwich in the picture probably doesn't look so delicious because it has no oil or butter. That means the bread is like toast rather than golden brown like a regular 'hot sando'. I don't like the translation 'hot sandwich' because to me it seems that you have a usual sandwich that is hot. For example, like a sandwich you buy at Seven Eleven and they put it in the microwave oven for you.
Today's sandwich filling is cheese and roast pork! It is REALLY delicious - you should try it. Much better than cheese and ham.
Other fillings can be:
* left-over stew type fillings -- curry, gratin, stew
* potato salad -- the mashed type, and take out the cucumber!
* chopped apple and a sprinkle of cinnamon
* banana and nutmeg
* sweet red bean paste
Use your imagination :)
