Accompaniment:Cucumber, Radish, and Red Onion Salad
Directions
Thinly slice mozzarella. Pit, peel, and thinly slice avocado. Spread butter on one side of each bread slice and turn slices over. Spread mustard on bread slices and top 2 slices with mozzarella, avocado, and turkey. Season turkey with salt and pepper and top with remaining 2 bread slices, buttered sides up.
Heat a heavy skillet over moderate heat until hot but not smoking and cook sandwiches until bread is crisp and cheese is melted, about 1 1/2 minutes on each side.
