To create Cheesy Ranch Potatoes and Smoked Sausage, follow these simple steps:

1. Preheat Oven: Start by preheating your oven to 400°F (200°C).
2. Prepare Baking Dish: Grease a large baking dish with cooking spray or olive oil.
3. Combine Ingredients: In a large bowl, mix the diced potatoes, sliced smoked sausage, olive oil, garlic powder, onion powder, ranch dressing mix, salt, and pepper.
4. Layer the Mixture: Transfer the potato and sausage mixture into the prepared baking dish evenly.
5. Cover and Bake: Cover the baking dish with aluminum foil and place it in the preheated oven.
6. Bake Initially: Bake for 30 minutes. This allows the potatoes to soften and absorb flavors.
7. Add Cheese: Remove the foil, sprinkle the shredded cheddar cheese evenly over the top of the dish.
8. Bake Uncovered: Return the dish to the oven and bake for an additional 10 minutes or until the cheese is melted and bubbly, and potatoes are tender.
9. Prepare for Serving: Remove the dish from the oven and let it cool for a few minutes.
10. Garnish: Top with chopped green onions if desired before serving.

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