This might sound unconventional, but it's really good:
1 pound parsnips
salt and pepper
Preheat oven to 450 degrees. Spray baking sheet with cooking spray.
Peel parsnips and cut into French-fry strips. Arrange in single layer on cooking sheet and spray with cooking spray. Season with salt and pepper.
Bake for 20 minutes, then use a spatula to turn fries over, bake another 10 minutes.
Instead of salt and pepper, you can season them with various seasoned salts (garlic, cheddar, parmesan, nacho).