Air Fryer Crispy Sweet Potato Fries with Cornstarch Trick (Perfect Crunch)

How to Make Air Fryer Crispy Sweet Potato Fries with Cornstarch Trick (Perfect Crunch)

1. 1

   Step 1: Trim, cut and soak the sweet potatoes

   Peel (optional) and cut the sweet potatoes into even 1/4–1/2-inch fries. Transfer to a bowl of cold water and soak for 20–30 minutes to draw out excess starch, which helps the fries crisp better in the air fryer. While they soak, set up a clean kitchen towel or paper towels for drying.

   For this step

   • 2 medium (about 1 lb)Sweet potatoes
   
2. 2

   Step 2: Dry thoroughly and apply the cornstarch precoat

   Drain the fries and spread them on the towel, patting completely dry — moisture prevents crisping. Put the dried fries in a large bowl, sprinkle the cornstarch over them, and toss until each fry has a very light, even dusting; shake off any excess cornstarch. The thin cornstarch layer is the key trick for a crunchy exterior without deep frying.

   For this step

   • 2 tablespoonsCornstarch
   
3. 3

   Step 3: Oil and season

   Drizzle the neutral oil over the cornstarch-coated fries, add smoked paprika, garlic powder and black pepper, and toss well to coat. The oil helps the cornstarch set and promotes browning, while the spices add flavor. Use just enough oil to lightly coat — too much will make fries soggy.

   For this step

   • 2 tablespoonsNeutral oil (avocado or light olive oil)
   • 1 teaspoonSmoked paprika
   • 1 teaspoonGarlic powder
   • 1/2 teaspoonFreshly ground black pepper
   
4. 4

   Step 4: Air fry in a single layer until crisp

   Preheat the air fryer to 400°F (200°C). Arrange the fries in a single layer in the basket — work in batches if needed to avoid overcrowding — and air fry for 12–16 minutes, shaking or flipping halfway through. Check at 12 minutes and continue in 2–3 minute increments until edges are browned and crisp; total time varies with thickness and your air fryer model.

   For this step

   • 1 teaspoonKosher salt (to finish)
   • 2 tablespoonsFresh parsley, chopped (optional)
   
5. 5

   Step 5: Season and serve immediately

   Remove fries to a serving bowl and immediately sprinkle with kosher salt, tossing lightly to distribute. Garnish with chopped parsley if using and serve hot with your favorite dip. Leftovers lose crispness quickly, so enjoy them right away or re-crisp briefly in the air fryer.
   

1. Peel (optional) and cut the sweet potatoes into even 1/4–1/2-inch fries. Transfer to a bowl of cold water and soak for 20–30 minutes to draw out excess starch, which helps the fries crisp better in the air fryer. While they soak, set up a clean kitchen towel or paper towels for drying.
2. Drain the fries and spread them on the towel, patting completely dry — moisture prevents crisping. Put the dried fries in a large bowl, sprinkle the cornstarch over them, and toss until each fry has a very light, even dusting; shake off any excess cornstarch. The thin cornstarch layer is the key trick for a crunchy exterior without deep frying.
3. Drizzle the neutral oil over the cornstarch-coated fries, add smoked paprika, garlic powder and black pepper, and toss well to coat. The oil helps the cornstarch set and promotes browning, while the spices add flavor. Use just enough oil to lightly coat — too much will make fries soggy.
4. Preheat the air fryer to 400°F (200°C). Arrange the fries in a single layer in the basket — work in batches if needed to avoid overcrowding — and air fry for 12–16 minutes, shaking or flipping halfway through. Check at 12 minutes and continue in 2–3 minute increments until edges are browned and crisp; total time varies with thickness and your air fryer model.
5. Remove fries to a serving bowl and immediately sprinkle with kosher salt, tossing lightly to distribute. Garnish with chopped parsley if using and serve hot with your favorite dip. Leftovers lose crispness quickly, so enjoy them right away or re-crisp briefly in the air fryer.