Solar-Cooked Sweet Potatoes Recipe

Sweet potatoes that have been soaked in water.

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My family eats sweet potatoes on a regular basis. We throw them whole (skin and all) into a pot on the stove with some water and let them steam for about 30 minutes. After they cool down naturally you can eat them right away or put them in fridge to get cold. Whenever you want a snack, you just grab one out of the fridge and eat it like a fruit.

Since I roasted regular potatoes in a solar cooker successfully, I decided to try and roast whole sweet potatoes this time and it worked out perfectly! They came out light and fluffy and really, really hot! They also didn’t develop those dark, carmelized black spots on the bottom of the sweet potatwhen cooking on the stove – so that was a plus!

Let me know how this works out for you.

Aloha with love,

Roasted Okinawan sweet potatoes.

Solar-Roasted Sweet Potatoes

How to cook sweet potatoes in the sun with a solar cooker.
Prep Time: 30 minutes
Cook Time: 1 day
Keyword: Sweet Potatoes


  • Sweet potatoes
  • Small dish with water


  • You need a very clear and sunny day for solar roasting sweet potatoes whole. If unexpected clouds block the sun throughout the day, you'll end up with sweet potatoes that are cooked, but not super soft. Try to have them out in full sun for at least 8 hours. For me, that's 9 AM to 5 PM.
  • Soak your sweet potatoes in a bowl of water for at least 30 minutes. The soaked water will allow your potatoes to steam nicely throughout the day. This is optional.
    Sweet potatoes that have been soaked in water.
  • Add your sweet potatoes into your black pot along with a small dish of water (optional). The extra water will introduce more steam as they cook so they don't dry out during the day and burn on the bottom. If you don't have a dish small enough, you can add a little water into the bottom of the pot or a soaked cloth or paper towel.
    Sweet potatoes and a small dish of water in a pot.
  • Ideally, you want to be adjusting the solar cooker every 30 – 60 minutes so that it's facing the sun and cooking on high throughout the day.
  • Bring your sweet potatoes in and let them cool because they'll be too hot to eat. Enjoy!
    Cooked sweet potatoes with one potato broken in half.


  • If your day was cloudy, you may have to finish them off in the microwave or stove to get them to that soft and fluffy stage.
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