Then, there is the Kentucky Hot Brown sandwich, smashing!!!
Two slices of toast; top with slices of turkey breast. Top with tomato slices, then cover with a bechamel with either Parmesan or Cheddar. Put under broiler 'til really hot and golden, then top with two strips of bacon.
This is quite an old recipe, first served at the Brown Hotel in Louisville. The sliced deli turkey won't do it, must be nice slices of roasted turkey breast. It is a wonderful open sandwich.