Wash and scrub the potatoes, and microwave them till done (how long that depends on your microwave), mine takes about 15 min.
Slice the top off. Scoop the inside out. Add to the potatoes, the egg, hot milk, melted butter. And mix it with the mixer. Add the green onions, and parmesan cheese. Fill the potatoes, sprinkle with pepper and paprika, and with a little left over of the melted butter. Bake in a 350F oven for about 30 min.