Start by chopping your turkey into small, bite-sized pieces so it reheats evenly in the pan. Break up the stuffing a bit with your hands or a fork so it's not in one big clump. Chop any leftover veggies into similar sized pieces too.
Add your butter or oil to a large skillet over medium heat. Let it melt and coat the bottom of the pan fully before adding anything else. This step helps everything get that slightly crispy edge instead of just steaming.
Toss in the chopped turkey, stuffing and roasted vegetables all at once. Stir occasionally so nothing sticks or burns, letting everything warm through for about 4 to 5 minutes. You want some golden, crispy bits forming on the stuffing.
Pour in the leftover gravy and mix well so every bite gets coated. This is the step that brings the whole hash together and keeps it from tasting dry. Let it simmer gently for another minute or two.
While the hash finishes, crack your eggs into a separate pan with a little butter or oil. Cook them sunny-side up or over easy, whichever you prefer for that runny yolk. This usually takes about 3 to 4 minutes depending on your stove.
Divide the hash onto plates and place a fried egg right on top of each portion. Sprinkle with cheese, green onion or parsley while everything is still hot. Serve immediately so the egg yolk stays warm and runny.