For the casserole with chard, thoroughly wash the chard leaves and vegetable mallow, cut away hard stems. Boil water in a pot and throw in the leaves, boil for about 2 min until everything collapses.
Pour into a sieve and squeeze a little. Separate the eggs. Beat the snow with salt until stiff. In another bowl, mix Parmesan cheese (save a little to sprinkle on top), bread crumbs, whipped cream, pepper, pressed garlic and nutmeg.
Mix in squeezed vegetable leaves. Fold in the snow. Butter and crumble a baking dish, fill in the mixture.
Sprinkle some parmesan on top. Cover the pan and bake at 200 degrees for about 30 minutes.