Instant Pot Chicken and Dumplings

Name: Instant Pot Chicken and Dumplings
Ingredients: 4 tablespoons unsalted butter; 1 tablespoon baking powder; 1 3/4 cups plus 2 tablespoons all-purpose flour; Kosher salt and freshly ground black pepper; 1 cup whole milk, at room temperature; 1 small onion, chopped; 2 medium celery stalks, chopped; 2 medium carrots, chopped; 2 cloves garlic, minced; 1 tablespoon fresh thyme leaves; 2 cups chicken stock; 1/2 cup dry white wine; 1 1/2 pounds boneless, skinless chicken breasts, cut into 1-inch pieces; 1 cup frozen peas; 1/4 cup chopped fresh flat-leaf parsley