DOUGH:

3 c. flour
4 oz. cream cheese
2 eggs
4 tbsp. sour cream

FILLING:

1 container pot cheese (Farmer's cheese)
1 egg yolk
1 tsp. butter
Salt
butter

Combine first 4 ingredients. Knead well. Let rest for 10 minutes. Roll out to 1/8 inch and cut with round cookie cutter.

Combine next 3 ingredients. Place small amount of filling on half the circle. Fold dough and seal edges with fork. Drop in boiling, salted water for 5 minutes. Drain and cool. Fry in butter until golden brown. Sprinkle with sugar.