1.Preheat An Oven To 350 Degrees F (175 Degrees C). 2.Spread Mayonnaise On Each Half Of The Split Hoagie Rolls. Layer 1/4 Cup Turkey, 1/4 Cup Stuffing, 2 Tablespoons Gravy, And 2 Tablespoons Cranberry Sauce On Each Of The Four Hoagie Halves. Top Each Sandwich With The Remaining 4 Pieces Of Bread. Wrap Each Sandwich In Aluminum Foil And Place In The Oven For 15 Minutes Or Until The Sandwiches Are Heated Through.