Turn the oven to 180 ° C.
Peel the potatoes and cut them into approx. 7 mm thick discs
Cut the onions into thin slices.
Distribute potato slices and onion slices in a greased, ovenproof dish.
Squeeze garlic over, and sprinkle with grated nutmeg, salt and pepper.
Pour the cream / milk over.
Cover the dish with tin foil and put it in the oven for approx. 1 hour, until tender - mark with a meat needle. If you want your creamed potatoes to have a dark surface, remove the tin foil at the last 5-10 minutes.