Before you cook dumplings with onions, you need to prepare the food.
Sift flour. Add salt; beat in an egg; add water; stir with a spoon; use hands to knead the dough like into dumplings; leave the dough for 20 minutes (cover with a towel).
Peel, wash the onion. Cut in small pieces. Preheat a frying pan, pour in vegetable oil. Lay out the prepared onion. Fry over medium heat, stirring occasionally, until golden brown.
Divide the dough into 3-4 parts. Roll each part into a thin sausage.
Cut dumplings with a sharp knife (about 0.5 cm thick).
Boil 2.5 liters of water. Salt. Dip the prepared dumplings into boiling water. Cook them. To do this, bring to a boil while stirring. After surfacing, cook dumplings for another 5 minutes.
Throw the dumplings in a colander.
Put the ready-made dumplings in plates, pour with overcooked butter and sprinkle with fried onions.