01 -
Preheat the oven to 190°C.
02 -
In a large mixing bowl, combine thawed shredded hashbrowns with shredded cooked chicken breast.
03 -
Add shredded cheddar cheese to the mixture and blend thoroughly.
04 -
Stir in sour cream, whole milk, and melted unsalted butter until well combined.
05 -
Season with garlic powder, onion powder, black pepper, and salt. Mix to distribute the spices evenly.
06 -
Gently fold in chopped green onions.
07 -
Transfer the mixture evenly into a greased 33x23 cm baking dish.
08 -
In a small bowl, combine breadcrumbs with 15 g melted butter until the mixture is coated.
09 -
Evenly scatter the breadcrumb mixture over the surface of the casserole.
10 -
Bake in the preheated oven for 30–35 minutes, or until the topping is golden and the dish is heated through.
11 -
Remove the baking dish from the oven and allow to rest for 5 minutes before serving.
12 -
Portion and serve warm.