I. Preheat the Oven:

• Preheat your oven to 375°F (190°C).

II. Prepare the Chicken Mixture:

• In a large bowl, combine the diced chicken, cream of chicken soup, chicken broth, and frozen mixed vegetables. Mix well and pour into a greased 9×13-inch baking dish.

III. Prepare the Dumplings:

• In a separate bowl, mix together the flour, baking powder, salt, pepper, and garlic powder. Add the milk, melted butter, and sour cream, and stir until just combined.

IV. Assemble the Casserole:

• Spoon the dumpling batter over the chicken mixture in the baking dish, spreading it out evenly. Sprinkle the shredded cheddar cheese on top.

V. Bake:

• Bake in the preheated oven for 35-40 minutes, or until the dumplings are golden brown and cooked through and the casserole is bubbly.

VI. Serve:

• Let the casserole cool for a few minutes before serving. Enjoy!