Preheat a skillet over medium heat.
Spread butter on one side of each slice of bread.
Place one slice of bread, buttered side down, in the skillet.
Add the cheese on top of the bread in the skillet.
Cover with the second slice of bread, buttered side up.
Cook for 3-4 minutes until golden brown.
Carefully flip the sandwich using a spatula.
Cook the other side for another 3-4 minutes until crispy.
Remove from the skillet and let it cool slightly.
Slice and serve with your favorite dipping sauce.