Parmesan-Thyme Baked Sweet Potato Fries

1 Preheat oven to 450 degrees F. Line a sheet tray with parchment paper and top with a cooling rack.
2 Peel sweet potatoes if you prefer - I like to leave the peel on mine. Slice sweet potato lengthwise into thin (1/2-inch square or smaller) fries. In a small bowl combine parmesan, panko, thyme leaves, salt and pepper.
3 In a plastic bag or large bowl, toss sweet potatoes with oil. Add parmesan mixture and toss until fries are evenly coated (don't worry if not all of the parmesan mixture sticks; just discard any leftover).
4 Spread sweet potatoes in single layer on prepared cooling rack. Bake until sweet potatoes are tender and golden brown, turning with a spatula halfway through, about 20 minutes.
5 Whisk together all ingredients for Spicy Yogurt Dipping Sauce. Serve on the side.