Chicken Paprikash with Dumplings Recipe

Name: Chicken Paprikash with Dumplings Recipe
Ingredients: For the Chicken:; 2 tablespoons vegetable oil; 1 small yellow onion, diced; 3 tablespoons unsalted butter; 1 tablespoon Hungarian paprika; 1 1/2 cups plus 2 tablespoons water; 1/2 teaspoon freshly ground black pepper; 1 teaspoon salt; 1 pound boneless, skinless chicken thighs, cut into 3-inch pieces; 2 tablespoons all-purpose flour; 1/4 cup heavy cream; 1/4 cup sour cream; 1/4 cup ajvar (a Middle Eastern pepper spread, optional); For the Dumplings:; 3 1/2 cups all-purpose flour, plus more as needed; 1 teaspoon dry yeast; 1 cup whole milk, at room temperature, plus more as needed; 2 eggs, beaten