Pre-heat oven to 425 degrees. Toss potatoes, oil, and rosemary on a rimmed baking sheet. Spread out potatoes in a single layer; season with salt and pepper. Roast, stirring once halfway through cooking, until potatoes are golden brown and crisp outside and tender inside, about 30 minutes.
Potatoes From Pioneer Woman- amazing! I used fresh rosemary sprigs on top of mine and served with pork loin- these would have been great with fish too! Another pinner recommends using chicken broth in place of the olive oil.