Chicken Pot Pie

Name: Chicken Pot Pie
Prep time: 25 min
Cook time: 40 min
Total time: 1 h 15 min
Yield: 6
Ingredients: Ingredients; Filling; 1 lb boneless, skinless chicken breasts or thighs, cooked and diced; 1 cup frozen peas; 1 cup frozen corn; 1 cup carrots, diced; 1/2 cup celery, diced; 1/2 cup onion, diced; 4 tablespoons unsalted butter; 1/4 cup all-purpose flour; 2 cups chicken broth; 1 cup milk or heavy cream; 1 teaspoon salt; 1/2 teaspoon black pepper; 1/2 teaspoon dried thyme; 1/4 teaspoon garlic powder; Crust; 1 package (2 sheets) pre-made pie crust, or homemade pie dough; 1 large egg, beaten (for egg wash)