Butter both sides of the bread. Add cheese. Fry until cheese melts. Put the slices together and fry a little more in the pan, flipping once. Serve hot.
A classic Grilled Cheese involves 1 slice of cheddar per bread slice. I added muenster and crumbled goat cheese, garnished with a side of kale chips. (Because there was cheese in the fridge that needed to be used, if you know what I mean). Next time I will add more cheddar and a little less goat cheese (strong flavor overpowers the sandwich).