Use good crusty bread so the sandwich holds up well. Let the prosciutto come to room temperature for a softer texture and better flavor. Do not overfill the sandwich; balance is key. Assemble just before serving to keep the bread from getting soggy.

For variations, swap mozzarella for burrata, use pesto instead of balsamic glaze, lightly toast the bread for a warm sandwich, or add sliced tomato, roasted red peppers, or a fried egg. Store components separately and assemble when ready.

For a packed lunch, wrap tightly in parchment paper. Avoid reheating; prosciutto is best at room temperature.

Serve with a simple green salad, tomato soup, fresh fruit, apple slices, or a small charcuterie board. Nutrition values are estimates and vary by ingredients.