01 -
Preheat the oven to 375°F (190°C) and lightly grease a 9×13-inch baking dish.
02 -
In a large mixing bowl, combine the frozen hash brown potatoes, cream of chicken soup, sour cream, melted butter, shredded cheddar cheese, diced onion, diced ham, salt, and black pepper. Mix until thoroughly blended.
03 -
Spread the prepared mixture evenly into the greased baking dish, smoothing the top with a spatula.
04 -
Bake uncovered for 35 to 40 minutes, until the surface is bubbly and golden brown.
05 -
Let the casserole stand for several minutes before serving. Garnish with chopped fresh chives if desired.