Beat the eggs into a container, add salt, spices and sour cream to them and mix everything thoroughly with a whisk.
Then add the milk and start gradually adding flour, stirring constantly. As a result, the dough should have the same consistency as for pancakes.
Boil the chicken fillet in a saucepan for 15 minutes and cool. After that, cut it into small cubes.
Grate the cheese separately on a fine grater. Also cut the onion into small cubes.