Peel potatoes and slice into french fry shapes. (Wedges are okay too!) Place in a bowl. Pour olive oil on fries, and toss to coat. Arrange in a single layer on a baking sheet (lined with parchment for easier clean up, if desired). Sprinkle with salt and pepper (if desired). Bake at 425 for 40-50 minutes or until thickest pieces are cooked through.