Creating this Chicken and Dumpling Casserole is straightforward. Just follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Casserole Dish: Grease a 9×13-inch casserole dish.
3. Combine Chicken and Vegetables: In a large mixing bowl, combine the shredded chicken, frozen peas and carrots, cream of chicken soup, chicken broth, garlic powder, onion powder, salt, and pepper. Stir until well mixed.
4. Pour Mixture into Dish: Transfer the chicken mixture into the prepared casserole dish, spreading it evenly across the bottom.
5. Mix Dumpling Batter: In a separate bowl, whisk together the milk and baking mix until just combined. Avoid over-mixing; it’s okay if there are lumps.
6. Spoon Dumpling Batter: Carefully spoon the dumpling batter over the chicken mixture. Do not stir; it will spread and puff up during baking.
7. Bake: Place the casserole in the preheated oven and bake for 45-50 minutes, or until the dumplings are golden brown and a toothpick inserted comes out clean.
8. Let It Rest: Once finished baking, remove the casserole from the oven and allow it to cool for 5-10 minutes before serving.
9. Garnish: Sprinkle chopped parsley on top for a fresh touch before serving.

Following these steps will lead you to create a scrumptious Chicken and Dumpling Casserole effortlessly.