Creating amazing roasted potatoes is easy if you follow these straightforward steps:

1. Preheat the Oven: Preheat your oven to 425°F (220°C) to ensure even cooking.
2. Wash the Potatoes: Rinse the baby potatoes under cold water and scrub them gently to remove any dirt.
3. Cut the Potatoes: If using larger potatoes, cut them into bite-sized pieces. Baby potatoes can be halved or quartered.
4. Season the Potatoes: In a large mixing bowl, combine the olive oil, garlic powder, onion powder, rosemary, salt, and pepper. Add the potatoes and toss until they are evenly coated with the seasoning mixture.
5. Arrange on a Baking Sheet: Spread the seasoned potatoes in a single layer on a baking sheet lined with parchment paper or lightly greased.
6. Roast the Potatoes: Place the baking sheet in the preheated oven and roast for 30-40 minutes, tossing the potatoes halfway through to ensure even browning.
7. Check for Doneness: The potatoes should be golden brown and crispy on the outside. You can test their doneness by piercing them with a fork; they should be tender inside.
8. Garnish and Serve: Once done, remove the potatoes from the oven and let them cool for a few minutes. Garnish with fresh parsley if desired.

These steps will guide you to create the most amazing roasted potatoes that are sure to impress!