Chicken Pot Pie Hand Pies

Name: Chicken Pot Pie Hand Pies
Cuisine: American
Ingredients: 4 tablespoons unsalted butter; ⅓ cup diced yellow onion; ¼ cup carrot, peeled and diced; ¼ cup celery, diced; 1 tablespoon minced thyme; 3 tablespoons all purpose flour; 1 ¼ cup chicken stock; ½ cup whole milk; 1 ⅓ heaping cup cooked and shredded chicken breast; ½ cup frozen peas; salt and pepper to taste; 2 cup all purpose flour; ¼ teaspoons baking powder; ½ teaspoon salt; ¾ cup (1 ½ sticks) cold unsalted butter, cubed; 4 ounces cold cream cheese, cubed; 1 tablespoon ice water; 1 teaspoon apple cider vinegar; 1 egg, beaten