In a small bowl combine the stuffing, mozzarella cheese, and turkey. Stuff each mushroom cap with a tablespoon of stuffing. Arrange the stuffed mushrooms on a sheet tray or in a baking dish. Put in the oven and bake until the mushrooms are browned and the filling is toasted, about 15 to 20 minutes. Remove from the oven and arrange on a serving platter to serve.