Heat skillet to medium heat. (You may also use a Panini Press, if desired.)
Meanwhile, prepare the sandwiches by spreading one slice of each sandwich with dijon mustard.
Next, top the mustard with a slice of provolone cheese and about 4 ounces of turkey or whatever you prefer.
Spoon about 1 tablespoon cranberry sauce over the turkey and top with another slice of provolone and a final slice of bread.
Spread one side of each sandwich with a generous helping of butter.
Place the sandwiches with the butter side down onto the skillet.
Carefully butter the other side of the sandwich.
Cook until golden brown on the first side, about 2 minutes being careful not to burn, and flip to brown the other side.
Press down on the sandwich with a spatula while cooking so that the sandwich is flattened.
When both sides are browned and cheese is fully melted, remove the sandwiches from the skillet and serve warm with stuffing, sweet potatoes or your other favorite Thanksgiving leftover side dish.