01 -
Preheat oven to 175°C. Lightly grease a 22 x 33 cm baking dish.
02 -
Cut baked and cooled russet potatoes into uniform 2.5 cm cubes.
03 -
Spread half of the cubed potatoes evenly in the bottom of the prepared baking dish.
04 -
Distribute half of the shredded rotisserie chicken over the potatoes.
05 -
Whisk sour cream and whole milk together until fully smooth.
06 -
Pour half of the sour cream mixture evenly over the first layer of potatoes and chicken.
07 -
Sprinkle half of the shredded cheddar cheese, half of the green onions, and half of the bacon bits over the casserole. Season lightly with salt and black pepper.
08 -
Repeat the layering process with the remaining potatoes, chicken, cream mixture, cheese, green onions, and bacon. Season again if desired.
09 -
Cover the dish with aluminium foil and bake for 35-40 minutes, until the casserole is bubbling throughout.
10 -
Remove the foil and bake for an additional 5-10 minutes, until the surface becomes golden and slightly crisp.
11 -
Allow the casserole to rest for 5 minutes before serving to ensure cohesive portions.