Polish Pierogi

Name: Polish Pierogi
Prep time: 45 min
Cook time: 45 min
Total time: 1 h 30 min
Yield: 20 pierogis
Ingredients: Ingredients; Dough; 2 large eggs, room temperature; 1/4 cup water; 1/2 teaspoon salt; 2 cups all-purpose flour; Filling; 1 large egg; 1 teaspoon salt; 1/2 teaspoon sugar; Dash of pepper; 1 carton (15 to 16 ounces) soft farmer cheese or whole-milk ricotta cheese; Cooking and Serving; 1 to 4 tablespoons butter, divided; Optional: sour cream and minced chives