01 -
Preheat a panini press to medium. If using a skillet, set it over medium-low heat and have a second heavy pan ready for pressing.
02 -
Pat the mozzarella slices with paper towels to remove extra surface moisture. This helps the bread stay crisp.
03 -
Spread pesto on the inside of each bread slice. Layer mozzarella, folded prosciutto, torn basil, and black pepper between the bread slices.
04 -
Brush the outside of each sandwich lightly with olive oil on both sides.
05 -
Cook in the panini press for 4-6 minutes until the bread is golden and the mozzarella is soft. For a skillet, cook 3-4 minutes per side while pressing gently with the second pan.
06 -
Let the sandwiches rest for 1 minute, then slice with a serrated knife and serve warm.