How Long Do You Cook Sweet Potatoes

ByLily

Sweet potato cooking times shift depending on your chosen method, whether that means baking, boiling, steaming, or microwaving. So how long do you cook sweet potatoes exactly? The short answer is anywhere from 5 minutes in a microwave to 60 minutes in a hot oven.

Below you’ll find exact times for each method, plus simple steps so your sweet potatoes come out tender every single time.

Quick Answer: Cooking Times At A Glance

  • Baking (whole, 400°F): 45 to 60 minutes
  • Boiling (cubes): 15 to 20 minutes
  • Steaming (cubes): 15 to 20 minutes
  • Microwaving (whole): 5 to 8 minutes
  • Air frying (whole): 35 to 45 minutes at 390°F
  • Roasting (cubes): 25 to 30 minutes at 425°F

Size matters more then anything else. A small sweet potato cooks in half the time of a large one, so always check for doneness rather than trusting the clock alone.

How Long Do You Cook Sweet Potatoes

This is the question most home cooks ask, and the honest answer depends on your method and the size of your potato. Here is a closer look at each option.

Baking Whole Sweet Potatoes In The Oven

Baking gives you the sweetest, creamiest result because the natural sugars caramelize.

  1. Heat your oven to 400°F.
  2. Scrub the potatoes and poke each one 5 or 6 times with a fork.
  3. Rub the skin with a little oil and sprinkle on salt.
  4. Place them on a baking sheet lined with foil.
  5. Bake for 45 to 60 minutes, turning once at the halfway point.

A medium potato (about 8 ounces) usually needs 45 minutes. Large ones can take a full hour. They are done when a fork slides in with no resistance.

Boiling Sweet Potatoes

Boiling is fast and works great for mashing or soups. Peel and cut the potatoes into 1 inch cubes first.

  1. Put the cubes in a pot and cover with cold water by 1 inch.
  2. Add a pinch of salt.
  3. Bring to a boil, then lower the heat slightly.
  4. Cook for 15 to 20 minutes until a fork pierces them easily.
  5. Drain right away so they don’t get waterlogged.

Whole boiled sweet potatoes take longer, around 30 to 40 minutes, but most people cut them up for speed.

Steaming Sweet Potatoes

Steaming keeps more nutrients in the potato than boiling does. The timing is almost the same.

  • Cut into 1 inch cubes.
  • Add water to a pot and fit a steamer basket on top.
  • Cover and steam for 15 to 20 minutes.
  • Check with a fork at the 15 minute mark.

Microwaving Sweet Potatoes

This is the fastest route when your short on time.

  1. Wash and poke the potato several times.
  2. Place it on a microwave safe plate.
  3. Microwave on high for 5 minutes.
  4. Flip it and cook in 1 minute bursts until tender.

Most medium potatoes finish in 5 to 8 minutes total. Let it rest for 2 minutes before cutting, since it keeps cooking as it sits.

Air Fryer Sweet Potatoes

The air fryer gives you crispy skin in less time than a full oven.

  • Set the temperature to 390°F.
  • Poke the potato and rub it with oil.
  • Cook for 35 to 45 minutes, flipping halfway.

Roasting Sweet Potato Cubes

For cubes or wedges, roasting is the way to go.

  1. Cut the potato into 1 inch pieces.
  2. Toss with oil, salt, and pepper.
  3. Spread them in a single layer on a sheet pan.
  4. Roast at 425°F for 25 to 30 minutes, stirring once.

How To Tell When Sweet Potatoes Are Done

Time guides are helpful, but your senses are better. Use these checks:

  • A fork or knife slides in with almost no push back.
  • The skin looks slightly wrinkled and may release some syrup.
  • The inside is soft and easy to mash with a spoon.

If the center still feels firm, add 5 more minutes and test again. Under cooked sweet potatoes have a chalky texture that no amount of butter can fix.

Tips For Perfect Results Every Time

  • Pick potatoes that are similar in size so they finish together.
  • Don’t skip the fork pokes when baking or microwaving, or they can burst.
  • Larger potatoes need more time, smaller ones need less. Adjust by about 10 minutes per size step.
  • Let baked potatoes rest 5 minutes before opening. The steam finishes the job.
  • Store cooked sweet potatoes in the fridge for up to 5 days.

Common Mistakes To Avoid

Many people overcook or under cook sweet potatoes without realizing it. Watch out for these issues.

  • Cutting cubes too large, which doubles the cooking time.
  • Boiling at a hard roll instead of a gentle simmer, which makes them mushy on the outside.
  • Pulling them from the oven to early because the timer went off.
  • Forgetting to preheat, which throws off every baking time.

Final Thoughts

So there you have it. Baking takes 45 to 60 minutes, boiling and steaming take 15 to 20 minutes for cubes, and the microwave gets you there in 5 to 8 minutes. Pick the method that fits your schedule, test with a fork, and you will get tender sweet potatoes every time.

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