Place one slice of bread, buttered side down, onto the pan.
Layer cheese slices on top of the bread in the pan.
Place the second slice of bread, buttered side up, on top of the cheese.
Cook until the bottom slice of bread is golden brown and the cheese has started to melt, approximately 3-5 minutes.
Carefully flip the sandwich using a spatula.
Cook until the second slice of bread is golden brown and the cheese is fully melted, another 3-5 minutes.
Remove from the pan and let it cool for a minute or two.
Cut in half, if desired, and serve hot.
Enjoy your Grilled Cheese Sandwich!