Creating this mouthwatering dish is as easy as following these simple steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C). This temperature will ensure the potatoes cook evenly.

2. Prepare Potatoes and Sausage: In a large bowl, combine the halved baby potatoes and sliced smoked sausage. Toss them lightly in olive oil to coat.

3. Season the Mixture: Add the ranch seasoning, garlic powder, onion powder, salt, and pepper to the bowl. Toss everything together until well-coated.

4. Spread in a Baking Dish: Transfer the potato and sausage mixture to a large baking dish, spreading it out evenly to ensure even cooking.

5. Bake: Place the baking dish in the preheated oven and bake for 30 minutes. Stir halfway through to promote even cooking and browning.

6. Add Cheddar Cheese: After 30 minutes, remove the baking dish from the oven. Drizzle the ranch dressing over the dish, then sprinkle the shredded cheddar cheese on top.

7. Final Bake: Return the dish to the oven and bake for an additional 15 minutes, or until the cheese is bubbly and golden.

8. Garnish and Serve: Once cooked, remove the dish from the oven. Garnish with freshly chopped parsley, if desired, for added color and flavor.