Creating the perfect Steakhouse Potatoes Romanoff is easy if you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and grease a baking dish.
2. Prepare Potatoes: Peel the russet potatoes and cut them into thin slices.
3. Mix Ingredients: In a large bowl, combine sour cream, shredded cheddar cheese, grated Parmesan cheese, chopped onion, melted butter, garlic powder, salt, black pepper, and smoked paprika.
4. Combine Potatoes: Add the sliced potatoes to the mixture and stir until they are well coated.
5. Transfer to Baking Dish: Pour the potato mixture into the greased baking dish, spreading it evenly.
6. Bake: Cover the dish with aluminum foil and bake for 30 minutes. Then, remove the foil and bake for an additional 15-20 minutes or until the potatoes are tender and the top is golden brown.
7. Garnish: Once baked, let the dish cool slightly before garnishing with fresh chives, if desired.
8. Serve: Scoop out servings and enjoy!

Following these steps will lead to a creamy and cheesy potato dish that is sure to impress.