Creating Cheesy Ranch Potatoes and Smoked Sausage is a straightforward process. Follow these simple steps to achieve delicious results:

1. Preheat the Oven: Begin by preheating your oven to 400°F (200°C).
2. Prepare the Potatoes: In a large bowl, combine the halved or quartered baby potatoes, olive oil, ranch seasoning, salt, and pepper. Toss until the potatoes are evenly coated.
3. Add Sausage: Mix in the sliced smoked sausage, ensuring it is well distributed among the potatoes.
4. Arrange in Baking Dish: Pour the mixture into a large, greased baking dish, spreading it evenly.
5. Bake: Place the dish in the preheated oven and bake for 25-30 minutes or until the potatoes are tender and lightly golden.
6. Make the Sauce: While the potatoes and sausage are baking, combine the sour cream and milk in a medium bowl. Stir until smooth and set aside.
7. Add Sauce and Cheese: Once the potatoes are done, remove them from the oven and pour the sour cream mixture over the top. Sprinkle the shredded cheddar cheese evenly over everything.
8. Return to Oven: Place the dish back in the oven and bake for an additional 10-15 minutes until the cheese is melted and bubbly.
9. Garnish: Remove from the oven and let sit for a few minutes. Garnish with freshly chopped parsley if desired.
10. Serve: Scoop generous portions onto plates for serving.

Following these steps will guide you in creating this irresistible dish effortlessly!