Air FryerAir Fryer Sweet Potato Fries
Sweet potato fries go soggy because sweet potatoes hold more sugar and moisture than regular potatoes — that sugar wants to steam, not crisp. A thin cornstarch coat pulls surface moisture and gives the fries a shell that actually shatters, and cutting them evenly means they all finish at the same time instead of half-burnt, half-raw.
- for the fries
- 2 lb sweet potatoes, cut into ¼-inch fries
- 1 tbsp cornstarch
- 1.5 tbsp olive oil
- 1 tsp smoked paprika
- ½ tsp garlic powder
makes about 4 side portions — cook in two batches if your basket is small rather than piling them in.
- Cut the sweet potatoes into even ¼-inch fries — matching thickness is what keeps them from cooking unevenly. Pat them completely dry.
- Toss the fries with cornstarch first until lightly and evenly coated, then drizzle with olive oil and toss again with smoked paprika, garlic powder, and salt.
- Preheat the air fryer to 380°F (193°C) for 3 minutes.
- Spread the fries in a single layer with space between them — crowding steams them soft. Air fry 15–18 minutes, shaking the basket every 5 minutes, until the edges are deeply caramelized and crisp.
- Salt again straight out of the basket and serve right away — sweet potato fries soften as they sit, so they're best hot.
No cornstarch? Arrowroot or rice flour does the same job; even a light dusting of regular flour beats nothing.
Fries came out soft? They were almost certainly crowded — give each fry room and cook in batches, it's the single biggest factor.
Want them sweet-savory? Add a pinch of cinnamon to the cornstarch, or finish with a little chili-lime salt.
Prefer wedges? Cut into ½-inch wedges instead and add 3–4 minutes — same method, sturdier bite.
Kantan tip — coat with the cornstarch before the oil, not after — dry starch on dry potato is what forms the crisp shell; oil first just makes a paste.
Gear that makes this recipe easier
The tools this recipe actually calls for, with the one we'd reach for in each category — these link to our own comparisons, not straight to a store.