Preheat your oven to 375°F (190°C) and lightly grease a 9x13-inch casserole dish.

In a large mixing bowl, combine your cooked chicken with softened cream cheese, sour cream, garlic powder, onion powder, salt, and pepper.

If adding vegetables, gently fold in the steamed broccoli or cauliflower into the creamy chicken mixture.

Transfer the mixture into the greased casserole dish and spread it evenly.

Sprinkle the remaining shredded cheddar cheese on top of the chicken mixture.

Bake uncovered for about 20–25 minutes until the cheese is melted and golden brown.

Let the casserole rest for about 5 minutes before serving.

Scoop onto plates and serve warm, ideally with a refreshing salad.