Stupendous Slow Baked Sweet Potatoes - cooking recipe

Ingredients

4 medium sweet potatoes (or as many as you need)
4 tablespoons butter (optional)

Preparation

Place rack in center of oven. Preheat to 350 degrees.
Scrub sweet potatoes to remove any dirt. Place sweet potatoes on a foil-lined baking sheet or an oven-proof stone. Bake for one hour.
Remove sweet potatoes from oven, flip them to the other side, and bake another hour.
Once the second hour has passed, turn OFF the oven and keep the potatoes in the oven for another hour.
This long baking time produces a very sweet sweet potato that is very easy to peel. They are almost carmelized. (Take a bite before you add the butter, it really doesn't need it).