Potato and Cheese Pierogi with Sour Cream Topping

Method

1. Boil and mash potatoes until smooth.
2. Mix mashed potatoes with crumbled cheese, butter, sour cream, salt, and pepper.
3. In a separate bowl, combine flour, egg, and water to make a dough.
4. Knead the dough, let it rest, then roll it out and cut into circles.
5. Fill each circle with the potato-cheese mixture, fold, and seal.
6. Boil the pierogi in salted water until they float.
7. Serve warm with sour cream and fried onions.