0.5 cup shredded extra sharp Cheddar cheese, divided
Instructions
Melt 1 1/2 tablespoons butter in a large nonstick skillet over medium-low heat. Place bread slices over hot butter in the skillet.
Spread about 1/4 cup Cheddar cheese on 1 bread slice; place other bread slice, butter-side up, on top of cheese. Spread about 2 tablespoons cheese on top of sandwich.
Melt remaining 1/2 tablespoon butter in the skillet next to sandwich. Flip sandwich onto melted butter, cheese-side down. Spread remaining cheese on top of sandwich. Cook until cheese on the bottom is crispy and caramelized, 3 to 4 minutes. Flip sandwich and cook until cheese is crispy and caramelized on the other side, 3 to 4 minutes more.