Layers of cheddar, provolone, and mozzarella melt between golden sourdough slices for the ultimate comfort classic.
# Directions:
01 - Lay out the sourdough slices. Spread butter evenly on one side of each slice. If using, spread a thin layer of mayonnaise on the other side for extra crispiness.
02 - Place two slices, buttered side down, on a clean surface. Layer each with 1 slice cheddar, 1 slice provolone, and half the shredded mozzarella.
03 - Top with the remaining bread slices, buttered side up.
04 - Heat a large skillet or griddle over medium-low heat. Place the sandwiches in the pan.
05 - Cook for 3–5 minutes per side, pressing gently, until the bread is golden brown and the cheese is fully melted. Flip carefully to avoid spillage.
06 - Transfer to a cutting board, let rest for 1 minute, then cut and serve hot.