Preheat your oven to 375 degrees Fahrenheit. Spray a 9-by-13-inch baking dish with cooking spray. Set aside.
In a large bowl, whisk together chicken broth, condensed cream of chicken soup, garlic powder, onion powder, and black pepper.
2 cups chicken broth, 10.5 ounces condensed cream of chicken soup, 2 teaspoons garlic powder, 2 teaspoons onion powder, 1/4 teaspoon black pepper
Stir in the chicken and vegetable mix until well coated. Pour the mixture into the prepared baking dish.
16 ounces frozen vegetables, 4 cups shredded chicken
In another bowl, combine the Cheddar Bay biscuit mix, the seasoning packet included, milk, and cheddar cheese. Spread over the mixture in the baking dish carefully. Do not mix in. Then gently brush with the melted butter.
11.36 ounce package Cheddar Bay Biscuit Mix, 2 cups milk, 2 tablespoons butter, 1/2 cup shredded cheddar cheese
Bake uncovered for 45 minutes to 1 hour or until the top is golden brown and the inside registers 165 degrees Fahrenheit with an instant read thermometer. Allow it to sit for 10 minutes before serving.