Preheat oven to 400 degrees F. Spray a baking sheet with nonstick cooking spray.
Roll out the pizza dough onto a baking sheet. Partially bake the dough according to the directions on the tube.
Spread a layer of gravy as the base, then top with turkey, mashed potatoes, and stuffing. Distribute them evenly.
Sprinkle on the mozzarella cheese and top with crispy fried onions.
Bake the pizza the remaining time or until the crust is golden and cheese is melted.
When the pizza comes out of the oven, top it with cranberry sauce and additional gravy.