1. Preheat your oven to 400°F (200°C). Lightly grease a large baking dish or a rimmed sheet pan.
2. Bring a large pot of salted water to a boil. Add the cubed potatoes and cook for about 8 minutes, until just tender but not falling apart. Drain and set aside.
3. While the potatoes cook, heat a large skillet over medium heat. Add the sliced smoked sausage and cook until browned and slightly crispy, about 5-7 minutes. Remove from heat and set aside.
4. In a large mixing bowl, combine the cooked potatoes, sausage, shredded cheddar cheese (reserve about 1/2 cup for topping), ranch seasoning mix, sour cream, mayonnaise, chopped green onions, butter, garlic powder, smoked paprika, salt, and pepper. Gently fold everything together until well mixed.
5. Transfer the mixture into the prepared baking dish, spreading it out evenly. Sprinkle the reserved cheddar cheese on top.
6. Bake uncovered for 20-25 minutes, or until the cheese is melted, bubbly, and turning golden brown at the edges.
7. Remove from oven and let it cool for 5 minutes. Garnish with extra chopped green onions before serving.

One trick I learned from Mama Lou was to let the dish rest a bit after baking. It allows the flavors to meld and makes serving easier. Also, don’t be afraid to adjust the seasoning — if you love a little extra kick, a pinch of cayenne pepper or a drizzle of hot sauce can make this dish sing.