These farmer's cheese vareniki (aka pierogi) are soft dumplings filled with sweet farmer's cheese. Make a huge batch and you'll have tons to freeze for your next craving!
In a medium bowl, mix the farmer's cheese, sugar and egg until well combined. Set aside.
Pierogi Dough
Whisk the eggs together with sour cream, lukewarm water, and milk until the mixture has an even texture.
Add in flour, sugar, and salt to the liquid ingredients. Knead the dough by hand or with a stand mixer with dough hook attachment until it is no longer sticky.
Making Pierogi
Roll out the dough on a well-floured surface. Using a cup or biscuit cutter, stamp out circles in the dough. Flour the cup to make it easier to cut circles.
Fill the circles with the cheese filling, placing the filling in the center.
Fold over the edges of the circles and pinch the edges with your fingers. Make sure the edges are tightly sealed so the filling does not fall out.
Bring a pot of water to a boil. Add 10-20 vareniki and cook until they float to the top. Drain, then top the hot vareniki with a few small slices of butter. Optionally, serve with sour cream, jam, or sugar.