01 -
Finely grate the mozzarella and Gruyere or vintage cheddar cheeses using a box grater for optimal melting.
02 -
Spread softened salted butter evenly on both sides of each bread slice to ensure a golden, crispy crust.
03 -
Heat a heavy-based skillet over medium-low heat and place one slice of bread in the pan, butter-side down. Toast for 1 minute to begin melting and add flavor.
04 -
Flip the toasted bread slice, then layer the grated cheeses evenly on top. Place the second slice of bread on top with the buttered side facing out.
05 -
Press down lightly on the sandwich and cook for 3 minutes, adjusting heat to achieve a deep, even golden brown crust without burning.
06 -
Carefully turn the sandwich over and cook for an additional 3 minutes until the bread is golden and crisp, and the cheese is fully melted.
07 -
Transfer the sandwich to a cutting board, let it rest briefly, and cut diagonally to reveal the molten cheese pull.