How to Make Perfect, Crispy Oven-Fried Sweet Potato Fries
5. Cook Them in the Upper Third of Your Oven
We tend to cook most things on the middle oven rack, but sweet potato fries cook best above the middle position, farther away from the heat source. Since sweet potatoes are, well, sweet, the sugars tend to "caramelize," or brown, more quickly than a regular potato’s. A little caramelization is a good thing—but too much and you’ll get burning instead. Moving sweet potato fries farther up in the oven slows the caramelization process. If you’re making two baking sheets’ worth at once, position one oven rack in the middle and one above. Be sure to switch positions during baking and also to stir all the fries at least once so they cook evenly.