For the gnocchi, wash the potatoes and cook them covered in water for about 25 minutes. Drain, quench briefly and peel. Press the hot potatoes through a potato ricer or mash them with a potato masher into puree.
Season with salt, pepper and nutmeg. Stir in semolina immediately. Leave to cool a little. Stir in starch and egg yolk. Let cool off.
In the meantime, wash and peel the asparagus and cut off the woody ends. Cut the asparagus diagonally into slices about 1⁄2 cm thick. Peel and finely dice the shallot. Wash spinach and shake dry.
Form gnocchi dough into rolls (approx. 2 cm Ø) on a little flour. Cut into pieces of approx. 2 cm width and press in slightly on one side with a fork. Cook in portions in plenty of boiling salted water at low to medium heat for 2-4 minutes (do not boil!) until they float on the surface.
Lift out the gnocchi and drain well.
Roughly chop the nuts. Heat 4 tablespoons of butter in a large frying pan. Sauté the nuts in it. Add the gnocchi and fry them for about 5 minutes, turning them until golden brown. Heat 1 tbsp. butter in another pan.
Fry the asparagus and shallots for about 3 minutes, turning them over. Add the spinach and let it collapse. Season with salt, pepper and nutmeg. Grate parmesan. Mix asparagus and spinach into the gnocchi and season again.
Do everything. Sprinkle with parmesan.