Step 1: Preheat your oven to 425°F (220°C).
Step 2: Wash and scrub the potatoes thoroughly. Cut them into uniform pieces.
Step 3: In a mixing bowl, combine the olive oil, rosemary, salt, and black pepper.
Step 4: Add the cut potatoes to the bowl and toss until coated.
Step 5: Transfer the potatoes to a baking sheet, spreading them evenly.
Step 6: Roast in the oven for 25-30 minutes, tossing halfway through.
Step 7: Check for doneness; they should be golden brown and crispy.
Step 8: Remove from the oven, let cool briefly, and serve warm.
