Chop the onions.

Melt butter in a pan over medium heat.

Fry the onions gently in the butter until softened.

Chop the turkey giblets into small pieces.

Add the giblets to the onions and cook gently until tender.

Cook and mash the potatoes.

In a large bowl, combine the mashed potatoes with the eggs.

Halve the pitted black olives and add them to the bowl.

Chop the parsley leaves and add them to the bowl.

Add the giblet and onion mixture to the potato mixture.

Season with salt, black pepper, and a pinch of nutmeg.

Mix all ingredients thoroughly to combine.

Transfer the stuffing to a baking dish.

Bake in a preheated oven at 350°F (175°C) for 30-40 minutes, or until golden brown and heated through.