This easy Air Fryer Sweet Potato Cubes recipe is seasoned simply, fast to prepare, and pairs well with many mains. Tender sweet potato cubes roast in under 20 minutes, developing a crisp exterior and a fluffy interior—so quick and efficient you’ll prefer the air fryer every time.
I’ve used an air fryer for years and love how it speeds up healthy cooking while using less energy than a conventional oven. It also creates a superior crunch with far less oil.
These sweet potato cubes use just one tablespoon of avocado oil and a handful of spices to deliver big flavor. They’re excellent for dipping—curry mayo, chipotle mayo, or a simple garlic aioli all work beautifully.
Best of all, they’re ready in about 20 minutes with minimal hands-on time, leaving you free to finish a main dish or toss together a quick salad.
Why You’ll Love This Recipe
- Healthy, versatile side dish that complements many proteins and cuisines.
- Ready in less than 20 minutes—ideal for busy weeknights.
- Perfect for meal prep: great source of carbohydrates and still tasty when cold.
- Naturally vegan and easily adaptable to different dietary needs.
Ingredients
- Sweet potatoes: About 1 large (or 2 small) — roughly 1 pound. For larger quantities, cook in batches so the cubes crisp evenly.
- Avocado oil: A tablespoon is enough; it has a high smoke point and neutral flavor. Use any oil you prefer.
- Seasonings: Salt, smoked paprika, garlic powder, chili powder, and cumin create a balanced savory profile. Add a touch of cinnamon for a warmer variation.
Equipment
- Air fryer: Any style will work — basket or oven-style. If using different models, watch cooking time and doneness closely.
How to Cut Sweet Potatoes Into Cubes
For even cooking, cut the potatoes into ½–1″ cubes. Method:
- Peel each sweet potato and slice into ½–1″ thick rounds.
- Cut each round into ½–1″ thick lengthwise strips, then crosscut into cubes.
- You should end up with uniform ½–1″ cubes that cook evenly in the air fryer.
How to Make Sweet Potato Cubes in the Air Fryer
Preheat your air fryer to 400ºF for at least 3 minutes, or follow your model’s preheat instructions.
Combine the avocado oil and seasonings (salt, smoked paprika, garlic powder, chili powder, and cumin) in a medium bowl.
Whisk the oil and spices into a thin paste, add the cubed sweet potatoes, and toss until evenly coated.
Air Frying Sweet Potato Cubes
- Place the seasoned sweet potato cubes in a single even layer in the preheated air fryer basket.
- Cook for 10–12 minutes at 400ºF, shaking the basket halfway through for even browning.
- When cubes are tender and easily pierced with a fork, remove them and let cool 2–5 minutes before serving.
- Serve with your favorite dipping sauce and enjoy.
Best Dipping Sauces for Roasted Sweet Potatoes
- Curry mayonnaise
- Chipotle mayonnaise
- Ketchup
- Ranch dip
- Garlic aioli
- Honey mustard
- Guacamole
Expert Tips
- Work in batches for larger quantities—about 1 large (or 2 medium) sweet potatoes per batch helps maintain crispness.
- Smaller ½” cubes cook faster and crisp up more; 1″ cubes take a bit longer but yield a heartier bite.
- If using an oven-style air fryer, add 1–3 minutes to the cooking time and check for doneness with a fork.
- For meal prep, cool the roasted sweet potatoes completely before storing to prevent condensation and sogginess.
Variations and Substitutions
With cinnamon: Add ½ teaspoon ground cinnamon to the spice mix for a warm, comforting note. Alternatively, replace the other spices (except salt) with 1½ teaspoons cinnamon and swap avocado oil for melted butter.
No oil: Lightly coat the cubes with cooking spray, then toss with seasonings. This reduces oil but may increase the chance of some blackening—spread the cubes in an even layer and monitor closely.
Frequently Asked Questions
Soaking is not necessary for this recipe. You can place peeled or unpeeled sweet potato cubes directly into the air fryer basket unless a recipe specifically calls for soaking.
Peel each potato, slice into ½–1″ rounds, cut each round into ½–1″ lengthwise strips, then crosscut into cubes. This yields uniform cubes that cook evenly.
Avoid overcrowding the basket. Sweet potatoes release steam, and overcrowding prevents airflow, which leads to sogginess. Cook about 1 pound of cubes per batch so they crisp and brown evenly.
More Easy Side Dishes
- Air Fryer Baby Potatoes
- Slow Cooker Maple Glazed Carrots
- Instant Pot White Rice
- Instant Pot Wild Rice Blend
- Slow Cooker Funeral Potatoes
Air Fryer Sweet Potato Cubes
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Ingredients
- 1 pound sweet potato peeled and cut into ½ – 1″ cubes (1 large or 2 small)
- 1 tablespoon avocado oil
- ½ teaspoon salt
- ¼ teaspoon smoked paprika
- ¼ teaspoon garlic powder
- ¼ teaspoon chili powder optional
- ¼ teaspoon cumin optional
Instructions
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Preheat your air fryer to 400ºF for at least 3 minutes, or follow your model’s instructions.
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Whisk the avocado oil and seasonings together in a medium bowl.
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Add the cubed sweet potatoes and toss to coat evenly.
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Transfer the coated cubes to the preheated air fryer and cook 10–12 minutes, shaking the basket halfway through.
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When tender, remove from the air fryer and serve with your favorite dipping sauce.
Video
Notes
With cinnamon: Add ½ teaspoon cinnamon to the spice mix or replace other spices (except salt) with 1½ teaspoons cinnamon; use melted butter instead of avocado oil for a richer finish.
Without oil: Lightly spray the cubes with cooking spray, toss with seasonings, spread in an even layer, and cook as directed. Watch carefully to avoid excessive charring.
Nutrition
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