Scrub the yams clean, pat them dry and use a fork to poke several holes into each one.
Lightly coat the sweet potatoes in avocado oil (substitute an oil of your choice) and sprinkle with about 1 teaspoon of coarse sea salt for each potato.
If your air fryer requires preheating, preheat it to 350°F degrees.
Place the potatoes side by side in the air fryer basket.
Cook at 350°F degrees for 30-40 minutes, flipping after 15-20 minutes. They're done when a knife can be inserted with ease through the potato.
Serve with a slice of salted butter and more coarse sea salt.
Notes
To enjoy the skin, make sure it is scrubbed clean and doesn’t have any dry or rotting spots on it.
The size of the sweet potato is key to even cooking. If you're cooking more than one, make sure they’re the same size so they air fry evenly. Sweet potatoes that are short and round will take much longer to cook through.
For evenly air fried yams, don’t overcrowd the air fryer. I usually air fry two yams at a time.
If you’re using a larger capacity or toaster oven-style air fryer, you may be able to fit more yams in the basket.
No need to spray the air fryer basket as the yams are oiled so they won’t stick.
If your air fryer has a preheating function, be sure to preheat it before adding the sweet potatoes.
Piercing holes into the skin of the sweet potato helps steam escape as it air fries.
Each air fryer cooks a little differently, so start checking the yams at about 30 minutes.
You’ll know they’re done when a knife easily goes through the flesh.