To prepare this sweet and delicious version of gnocchi, you will have to start by cooking the potatoes: since they must absorb as little water as possible, it is always better to steam them and with the peel, which gives extra protection.
Once cooked, remove the peel and mash the potatoes with a potato masher in a bowl, or on a work surface. Let them cool for 2 minutes and then add the well sifted flour. Stir, then add the egg.
Knead with your hands and then add the Parmesan too; finally pepper and nutmeg. Form a smooth and soft dough, but if it is too sticky, adjust with flour.Take a ball of dough and crush it well on the palm of your hand: you will have to form a very thin layer that covers your plum, it should almost be visible. The dough will swell during cooking, so if the dough is too thick and the plum will not be felt too often.
While you are forming your balls, arrange the ones already made on a sheet of floured baking paper, about 1 cm away from each other.
Cook your gnocchi in salted boiling water until they come to the surface, after about 5 minutes. Then take them out with a slotted spoon and place them on a lightly oiled plate.
At this point, prepare a delicious breadcrumbs sand: melt the butter in a pan, then add the 4 tablespoons of breadcrumbs. Cook over medium-high heat, stirring often, until the breadcrumbs turn brown, but not burnt! Place the mixture in a small bowl, then add the sugar and cinnamon. Mix everything.
At this point, serve as you wish, remembering to serve with a generous pinch of that delicious litter. Savor their goodness, enjoy your meal!
My advice: If in the end you find yourself with too many leftover dumplings, freeze them before cooking them, so that if necessary, just boil the pasta and dip them. If, on the other hand, you have some dough left over, create very simple potato gnocchi by making long loaves about a finger wide, then cut them into small pieces and let them rotate on the tips of a fork, so as to give them the classic shape. Even the latter, once frozen, can be used in a thousand preparations: gnocchi alla sorrentina if you are a lover of tomato and stringy mozzarella, seafood if you prefer fish or even better cheese and truffles... yum!