Finely mince the cooked ham in the blender and keep aside.
In a bowl, beat the eggs before adding Parmigiano and ground ham.
Mix with a fork and then knead with your hands until soft and well mixed.
Let rest in the refrigerator for about an hour.
Lay the dough on a sheet of baking paper and shape it into a meatloaf with your hands.
Wrap in baking paper by folding the paper flaps under the roll. Then, wrap it in aluminum foil.
Place the wrapped meatloaf in a pan, cover with warm water, and cook on the stove over medium heat and a half-covered pan for 45 minutes. If the package floats, turn it over halfway through cooking.
Turn off and let the patty cool in the pan for 30 minutes.
Then, gently remove the roll from the water with both hands and lay it on a plate. It is still soft at this stage.
Discard the paper wrapping, cover the plate, and let it chill in the refrigerator overnight or several hours before slicing.
If you want to serve it warm, heat the meatloaf in a covered baking dish in a preheated oven at 170 degrees for about 15 minutes. Then remove from the oven and let rest a few minutes before serving.
After baking, store in the refrigerator for 2-3 days or in the freezer for up to two months.