The cheese at the bottom of the pan will inevitably be closer to the burners ... Read more: The 17 Hardest Dishes To Make From Scratch Not all cheeses are able to melt into a smooth, uniform sauce.
That pan better be piping hot ... of one side all the way through and of course hoping not to overdo the melt on the cheese ...
Smushing a cheese sandwich in the pan leaves you with a crisp outside and gooey inside ... 1/3 cup grated (or 1 or 2 slices) ...