Grilled cheese has to be one of the best comfort foods around, especially on a chilly fall day–all warm and gooey and delicious. Yum. But it can also be pretty unhealthy, if you’re not careful. Some grilled cheeses, as comforting as they are, can be loaded with fat and calories. To help you make over your favorite lunchtime sandwich, here are five healthy twists–aside from ditching the white bread and using a part-skim cheese, of course.