Sweet potatoes have 400% more Vitamin A in them than white potatoes. They also have more Vitamin C, fewer calories, more fiber and few net carbs than a white potato, despite having more sugar (source). By using sweet potatoes and baking them, you can enjoy your baked sweet potato fries with less guilt!
The recipe is from Rebecca Seal's new cookbook on Istanbul cuisine. She calls it Turkish potatoes, but I'm almost certain it's a Kurdish recipe. Either way, it's simple and really tasty. Just don't add the onions zu early or they will burn.