Human: What is the best way to cook sweet potatoes? Assistant: 
The best way to cook sweet potatoes is to first preheat the oven to 400°F. Then, take the sweet potatoes and rinse them well and pat dry. Pierce each sweet potato with a fork several times and rub them with a light coating of oil. Place the sweet potatoes on a baking sheet and bake for 45-55 minutes, turning it over halfway through. Check to see if they are done by piercing them with a fork. If the fork easily slides through the potato, then the sweet potatoes are done. Serve and enjoy!