Here's how mom makes her super yummy oven french fries:
Peel the potato, rinse it off. Cut into french fry shapes. Place the cut potatoes onto a doubled paper towel. Using another doubled paper towel pat the potatoes until the moisture is removed. Place into a ziploc plastic bag. Pour about 1/2 tablespoon oil onto the cookie sheet and spread around with a brush or your fingers. Pour about 1/2 tablespoon to 1 tablespoon oil (depending on the amount of potatoes) over the potatoes in the ziploc bag. Seal the bag and squeeze it around until the potatoes are coated in oil. Spread onto cookie sheet. Bake in a 450 degree oven for 20 minutes, take a metal spatula and turn the potatoes over as well as you can. Continue baking until they are the crispness you like--5 to 20 minutes.
This way they do not stick to the pan and are easy to turn over!