My recipe is pretty much like the one that joyous posted.
1. Cut each sweet potato into slices about 1/4″ thick, then into sticks like French fries.
2. Toss the sweet potato with oil, salt, pepper and paprika (or seasoned salt).
3. Spread out on baking sheets in a single layer (I put it onto lightly sprayed parchment).
4. Bake at 450 degrees for about 25-30 minutes, turning with a spatula after about 15 minutes.
Sweet potatoes are not supposed to get brown and crispy like regular fries.