Wash and cut spinach/”blitva” leaves and put it aside.
Warm the butter in a large pot; add spinach/”blitva” and mix until butter covers the leaves. Add half of anticipated cream, and the whole amount of parmesan, chive, nutmeg, salt, pepper. Heat it all for 2-5 minutes.
Replace the lot into a refractory pot, cover with the rest of the cream. Bake it in the hot oven (200°C) 5 to 10 minute Serve hot.