Creating the perfect oven roasted potatoes is straightforward. Follow these steps for success:

1. Preheat Oven: Preheat your oven to 425°F (220°C).
2. Prepare Potatoes: Wash and scrub the potatoes. If using larger potatoes, cut them into even-sized pieces, about 1-2 inches.
3. Season the Potatoes: In a large bowl, combine olive oil, garlic powder, paprika, rosemary, salt, and pepper.
4. Coat the Potatoes: Add the potatoes to the bowl and toss well to ensure 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 in the Oven: Place the baking sheet in the preheated oven. Roast for 30-40 minutes, flipping the potatoes halfway through for even cooking.
7. Check for Doneness: Potatoes are done when they are golden brown and crispy on the outside and tender when pierced with a fork.
8. Garnish and Serve: Remove from the oven and sprinkle with fresh parsley if desired.

This step-by-step method ensures that you achieve perfectly roasted potatoes every time.