• Preheat oven to 400°F
• Line up rolls on baking sheet and bake for 12-14 minutes.
• While the rolls bake, beat together egg whites, eggs, parsley, feta cheese, milk, lemon peel, salt and pepper in bowl; set to the side.
• Slice into top of the baked rolls and scoop insides of rolls, removing and discarding the soft center.
• Place a slice of prosciutto in each roll.
• Fill each roll with the egg mixture and bake for an additional 14-18 minutes.