Prosciutto is an Italian ham cured by drying and typically served in very thin slices. This makes it perfect for sandwiches. This warm sandwich would be nice on a cold day! It seems like a winter sandwich to me. Pair with a delicious soup and you have a complete meal.
Blend Mayonnaise, chipotle and garlic. Place in refrigerator for at least one hour.
Place prosciutto in skillet for about 2 minutes until it is crispy. Place 4 slices of meat on each sandwich. Place onion in pan and cook until onion is caramelized. Place onion on top of prosciutto. Top with several sprigs of parsley and tomato slices.