Preheat your oven to 375°F (190°C) to get it ready for the sheet pan grilled cheese.
Generously butter one side of each slice of bread.
Place a slice of cheese between two slices of bread, buttered sides out, to create your sandwiches.
Lay the assembled sandwiches on a sheet pan in a single layer.
Put the sheet pan in the preheated oven and bake until the sandwiches are golden brown and the cheese is melted.
After a few minutes, flip the sandwiches to ensure even crispiness, then continue baking.
Once they're golden and crispy, take them out of the oven, let them cool briefly, and serve your delicious sheet pan grilled cheese sandwiches.