Boil the spinach leaves, pour off the water (also squeeze the water out of the spinach leaves) and then mix with the crème fraîche mug. Finally, season with spices (e.g. salt, pepper or vegetable stock). Cook the potato dumplings as described and then chop them up in a baking dish.
3. Spread the spinach and cremè fraîche over the chopped potato dumplings.
4. Cut the mozzarella into thin slices and spread over the spinach leaves. (alternatively: grated cheese)
5. Bake the casserole in a preheated oven at 200 ° top and bottom heat until the cheese has melted (about 5-10 minutes).