Preheat oven to 375.
Cut potatoes into quarters if small, and eighths if the potatoes are larger. Place in a large mixing bowl and coat evenly with olive oil.
Transfer potatoes to a large baking sheet and place in a preheated oven. Stir every 20-25 minutes, and place back in oven. Continue roasting for 1 1/2 hours or until potatoes reach desired crispiness. Season with salt and pepper. Serve.