Gather bread, cheese, butter, and a skillet
Heat the skillet over medium-low heat
Butter one side of each bread slice
Place one slice butter-side down in the skillet
Add cheese on top of the bread
Cover with the second slice of bread, butter-side up
Cook until the bottom is golden brown
Flip the sandwich carefully
Cook until the second side is golden brown and the cheese is melted
Remove from the skillet
Slice and serve