The secret to making the best grilled cheese sandwich is using quality ingredients, toasting both slices of each piece of bread, and salting at the end. Who knew?
2 T. butter, cut into three even pieces
2 slices hearty white bread, Pepperidge Farm or Arnold or your favorite
2 slices American, Cheddar, Jack cheese, or your favorite
Kosher salt, to taste
Melt 1/3 of the butter in a large non-stick skillet over medium heat until foaming stops. Add both pieces of bread and cook, swirling occasionally, until pale golden brown on bottom side, about 2 minutes.
Transfer to a plate or a cutting board toasted side up. Place both cheese slices on top of one slice and close the sandwich, with both toasted sides facing inside.
Melt another piece of butter in the skillet, reduce heat to medium low. Add the sandwich and cook, swirling occasionally, until a deep, golden brown, about 5 minutes.
Remove sandwich using a flexible metal spatula. Add the remaining piece of butter. Return the sandwich to the skillet cooked side up.
Season with salt and cook, swirling occasionally, until second side is a deep, golden brown and cheese is completely melted, about 5 minutes.
Serve immediately.