Wash the potatoes under cool running water, then scrub skins to remove dirt and soil. Leave the skin on, it preserves their taste and creates a fluffier inside.
Pour about 1–2 inches of water into a pot, then place the steamer basket inside. If you don’t have a steamer, use a metal strainer, colander, or sieve. It should fit in your pot without touching the water.
Place whole sweet potatoes in the steamer or metal strainer, spreading them out evenly so they cook uniformly.
Cover the pot with a lid and bring to a boil. Once boiling, reduce to medium heat and steam for 25–30 minutes.
Check for doneness with a fork or skewer. They’re done when the fork slides in easily.
Remove sweet potatoes from the pot, then let cool on a plate for about 5 minutes. Enjoy with your favorite toppings.