Let’s get cooking! Follow these steps to bring this delicious dish to life:

1. Preheat your oven to 400°F (200°C). This ensures that everything cooks evenly and the cheese gets that perfect melt.
2. In a large bowl, toss the diced potatoes with olive oil, ranch dressing mix, salt, and pepper. This step reminds me of helping my abuela seasoning her dishes, always using our senses to get the flavors just right.
3. Spread the seasoned potatoes in a greased baking dish and bake for 15 minutes. This is the perfect time to savor the aroma that starts to fill the kitchen.
4. While the potatoes are baking, heat a skillet over medium heat and cook the sliced smoked sausage until browned, about 5-7 minutes. The sizzle and aroma will transport you to those festive family dinners where sausage was always a favorite.
5. Remove the potatoes from the oven and top them with the cooked sausage and shredded cheddar cheese. Return the dish to the oven and bake for an additional 10 minutes, until the cheese is melted and bubbly.
6. Once done, remove from the oven and let it cool for a few minutes. Top with sour cream and garnish with chopped parsley if desired.