Smothered and covered hash browns are a Waffle House favorite, mainly because you get to choose whatever toppings you'd like. The same is true in this recipe, and while I like mine pretty plain (I just love those crispy potatoes!), I do add a few eggs when making it in casserole form. This helps give it "legs," making the casserole really stand up when served.
Other than that, I add a few green onions and a little bit of cheese and let it all bake together until perfectly golden. And while the Waffle House may offer a ton of options, you can expand on those even more when it's just you and your hash browns. Make them Mexican by using pulled pork and taco seasonings, or make them Italian by adding tomatoes and pancetta. When in your own kitchen, the choice is really all yours!
Pro tip: Get the bottom and sides of the potatoes extra crispy by cooking the casserole in a cast-iron skillet!