Air Fryer Sweet Potato Chips
Thin sweet potato slices, olive oil, salt, pepper and thyme, air fried at 350°F until the edges go golden and crisp. Two servings, one basket, no deep fryer.
Sweet potato chips go soft for one reason: the slices are too thick or stacked on top of each other. Fix those two things and a 350°F air fryer does the rest in 14 minutes.
This recipe uses one large sweet potato, a tablespoon of olive oil, and thyme with salt and pepper. That's it. You slice, you toss, you fry in batches, and you eat them while they're still warm because they lose their snap fast.
I'm assuming a 1500-watt basket-style air fryer here. If yours is smaller or weaker, expect a longer cook and smaller batches. That's the honest version.
Step-by-Step Instructions
1. Heat the air fryer
Set the air fryer to 350°F (180°C) and let it preheat. A cold basket gives you pale, soft chips on the first batch.
2. Slice the sweet potato
Cut the sweet potato into rounds 1/8 to 1/4 inch (3 to 6 mm) thick. A mandoline gets you there faster and more evenly than a knife.
3. Coat and season
Toss the slices in a medium bowl with the olive oil until every piece is coated. Add the salt, pepper and thyme and toss again.
4. Fry in a single layer
Add the chips to the basket in one layer, working in batches. Fry for 14 minutes, until the edges are golden and the chips feel lightly crisp.
5. Cool and repeat
Tip the finished chips onto a plate and start the next batch. They crisp up a little more as they cool for a minute or two.
Tips & Tricks
- Slice evenly. Uneven slices mean some chips are burnt at 14 minutes while others are still soft.
- Dry the slices with a towel before you oil them. Surface water is what makes them steam.
- Don't crowd the basket. Two layers of chips fry into one soggy pile.
- Salt again the second they come out of the basket. Salt sticks to hot, oily chips and slides off cold ones.
Pro Tips
Delicious Variations
Smoky version
swap the thyme for 1/2 teaspoon smoked paprika.
Plain version
oil and salt only, which is what the source cook did after finding the thyme too strong.
Spicy version
add 1/4 teaspoon cayenne to the salt and pepper before tossing.
How to Store Air Fryer Sweet Potato Chips
Refrigerator
Keep them in an airtight container at room temperature for up to 2 days. The fridge makes them limp, so only refrigerate if you must, and expect to re-crisp them.
Freezer
Don't freeze finished chips. They thaw soft and never come back.
Reheating
Spread them in a single layer and air fry at 350°F for 2 to 3 minutes. Watch them, because thin chips go from crisp to burnt fast.
Frequently Asked Questions
Q: Why are my sweet potato chips soggy?
Either the slices are thicker than 1/4 inch, they were wet when they went in, or they were stacked in the basket. Slice thinner, pat them dry, and cook one layer at a time.
Q: Do I need to soak them in water first?
No. Sweet potatoes don't have the surface starch that white potatoes do, so soaking doesn't help here. Drying them off does.
Q: Can I make these in the oven instead?
Yes. Spread the oiled, seasoned slices on a lined sheet pan in one layer and bake at 400°F (200°C) for about 20 to 25 minutes, flipping once. They come out a bit less even than the air fryer.
Q: How do I know they're done without a timer?
The edges look browned and dry, and a chip bends with a slight snap rather than flopping. Pick one up by the edge; if it droops straight down, give it more time.
Q: Can I skip the thyme?
Yes, and plenty of people do. Use just oil, salt and pepper, or cut the thyme to 1/2 teaspoon if you want a hint of it.
Slice thin, dry them, keep them in one layer, and salt them hot. That's the whole method. Cook it once, cook it right.
Air Fryer Sweet Potato Chips – Crisp in 45 Minutes
Thin sweet potato slices, olive oil, salt, pepper and thyme, air fried at 350°F until the edges go golden and crisp. Two servings, one basket, no deep fryer.
Ingredients
Instructions
- 1Heat the air fryer — Set the air fryer to 350°F (180°C) and let it preheat. A cold basket gives you pale, soft chips on the first batch.
- 2Slice the sweet potato — Cut the sweet potato into rounds 1/8 to 1/4 inch (3 to 6 mm) thick. A mandoline gets you there faster and more evenly than a knife.
- 3Coat and season — Toss the slices in a medium bowl with the olive oil until every piece is coated. Add the salt, pepper and thyme and toss again.
- 4Fry in a single layer — Add the chips to the basket in one layer, working in batches. Fry for 14 minutes, until the edges are golden and the chips feel lightly crisp.
- 5Cool and repeat — Tip the finished chips onto a plate and start the next batch. They crisp up a little more as they cool for a minute or two.
Darnell covers air fryer recipes and slow cook meals, with a steady side of eggs and breakfast casseroles for people cooking on a tight schedule. He writes in a blunt, test-it-again voice and flags the mistakes that ruin texture, from soggy fries to rubbery eggs. Every post gives timings, temperatures, and a fallback if your machine runs hot.
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