The ultimate lazy dinner.
Butter one side of each slice of bread
Preheat a non-stick pan over medium-low heat
Add the bread butter-side-down to the pan
Cover the exposed butter-free sides of the bread with the cheese
Cook until the cheese is starting to melt a bit
Using a spatula, flip one piece of bread over and align it with the other piece to form a sandwich
Assuming your heat wasn't too high, you should have nice browning on the outside of the bread and your cheese will be gooey on the inside of the sandwich
Serve with some tomato-basil soup or just eat on its own