1: Prepare the Bread

• Begin by spreading a thin, even layer of softened butter on one side of each bread slice.
• Make sure the butter covers the entire surface, including the edges, for even browning.
• Use a large cutting board for easy assembly and to keep your workspace tidy.

 2: Assemble the Sandwiches

• Flip four slices of bread so the buttered side faces down.
• Spread a generous but even layer of cranberry sauce on the unbuttered side of these slices.

 3: Layer the Cheeses

• Lay thin slices of brie cheese on top of the cranberry sauce. Arrange them evenly for a consistent, creamy flavor in every bite.
• Sprinkle the shredded mozzarella cheese over the brie to add a gooey, melty texture.
• (Optional) Add a pinch of flaky sea salt for a touch of savory enhancement.

 4: Top the Sandwiches

• Place the remaining slices of bread on top of the layered cheeses, ensuring the buttered side faces up.
• Press down gently to secure the fillings.

 5: Cook the Sandwiches

• Heat a large skillet or griddle over medium-low heat. This temperature prevents burning while allowing the cheese to melt perfectly.
• Carefully place the assembled sandwiches in the skillet. Cook for 3–5 minutes on each side, pressing gently with a spatula to ensure even browning and a compact structure.
• Flip the sandwiches once the bottom is golden and crispy, then cook the other side to perfection.

6: Serve

• Remove the sandwiches from the skillet and let them rest for a minute to avoid burns from the hot cheese.
• Slice the sandwiches diagonally for an elegant presentation and serve immediately while warm and gooey.