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Closeup of roasted sweet potatoes garnished with melted butter and chives.

Air Fryer "Baked" Whole Sweet Potato with Miso Butter

Bake a whole sweet potato in the air fryer for a sweet and savory roasted flavor. Top it off with a delicious umami flavored miso butter. 
5 from 2 votes
Prep Time 15 mins
Cook Time 40 mins
Preheat Air Fryer 5 mins
Total Time 1 hr
Course Appetizer
Cuisine American
Servings 3 potatoes
Calories 351 kcal



  • 3 medium sized sweet potatoes
  • 4 tablespoons butter, softened
  • 2 tablespoons white miso I use Cold Mountain Mellow White Miso
  • chives optional for garnish


  • Preheat the air fryer to 400 Fahrenheit for 5 minutes.
  • Wash and scrub three medium sized sweet potatoes.
  • Use a fork to pierce the potatoes - 3 times on both sides.
  • Place the sweet potatoes in a single layer in the fryer basket. Air fry potato for about 40 minutes.
  • While the potatoes are air frying, make the miso butter. Add miso to softened butter. Cream together with a mixer or fork until well incorporated.
  • Place the miso butter on a plastic wrap, fold the plastic wrap over and form a log shape, then roll it up tightly squeezing out any air bubbles. Refrigerate until ready to eat.
  • Top the potato with miso butter and garnish with chives. Enjoy while they’re hot!


*Nutritional information provided is only an estimate. Accuracy for nutritional information on any recipes on this site is not guaranteed. 
  • Make sure your air fryer basket is clean and grease-free before cooking. This will prevent any oil and crumbs from burning and smoking.
  • My air fryer has a 4 quart capacity and will fit three medium sized potatoes comfortably. Different basket sizes may fit more or less potatoes. 
  • Aim to use similar sized potatoes so they cook at the same time.
  • Cooking time may vary depending on the size of your potatoes.


Serving: 1potatoCalories: 351kcalCarbohydrates: 49gProtein: 5gFat: 16gSaturated Fat: 3gPolyunsaturated Fat: 4gMonounsaturated Fat: 7gSodium: 723mgPotassium: 793mgFiber: 7gSugar: 10gVitamin A: 32740IUVitamin C: 5mgCalcium: 80mgIron: 2mg
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