Ruskie Pierogi with Sour Cream

Method

1. In a large bowl, mix flour and a pinch of salt.
2. Make a well in the center and add the egg and water. Mix until a dough forms.
3. Knead the dough for 5-7 minutes, then let it rest for 30 minutes.
4. In a bowl, mix the farmer's cheese, sour cream, and chopped onion.
5. Divide the dough into small portions, roll each into a thin circle, and fill with the cheese mixture.
6. Fold the dough over the filling to form a half-moon shape, pressing the edges to seal.
7. Bring a pot of salted water to a boil, add the pierogi, and cook until they float to the surface.
8. Drain the pierogi and toss with melted butter.
9. Serve with a dollop of sour cream on top.