Crispy Air Fryer Sweet Potato Fries

Sweet potato fries have a reputation for going limp, and it is earned — in a home oven they steam in their own sugar and moisture and come out soft no matter what the recipe promises. The air fryer, with its fierce circulating heat and small chamber, is the first home method that reliably fixes them, provided you help it in two ways: a thin cornstarch coating that sets into a crisp shell, and a basket that is never crowded, so each fry roasts in moving air instead of its neighbour's steam.

The seasoning here is smoked paprika, garlic and a little salt, with the option of a pinch of brown sugar if your potatoes are not very sweet — it sounds backwards, but a teaspoon of sugar helps the edges caramelise and crisp. Cut the fries evenly, about 1/4 inch thick, and they will finish together with crisp, lacy edges and soft centres. They sit at the weeknight end of our Air Fryer collection, and they are the natural sidekick to our Crispy Air Fryer Chicken Tenders when the basket is doing double duty for dinner.

A quick soak in cold water before coating pulls surface starch off the cut fries, which keeps them from sticking together and helps the coating stay even. It is fifteen passive minutes that you can spend making the dipping sauce — a simple smoked paprika mayo is hard to beat here — and it is worth it.

Cornstarch is the crisping agent, not a coating to taste

You are not breading these fries; you are dusting them. One tablespoon of cornstarch across a whole batch disappears into a thin, dry film that absorbs surface moisture as the fries cook and then sets crisp in the hot air. Too much cornstarch is the one way to spoil it — a thick, uneven dusting cooks into chalky white patches that never brown. Toss the fries with the cornstarch in a large bowl until no white streaks remain visible, then add the oil and spices. If you can still see dry powder on a fry, keep tossing.

One layer, two batches, no exceptions

Every air fryer fry recipe that disappoints has the same hidden cause: the cook filled the basket to save time and steamed a double batch instead of crisping a single one. Fries need space on all sides because the crisping is done by moving hot air, and a fry buried under three others is in a steam pocket, not an air stream. Cook in two single-layer batches and keep the first batch warm in a low oven; the total time is barely longer, and every fry — not just the ones on top — comes out crisp.

Ingredients

• 2 large sweet potatoes (about 900 g), peeled
• 1 tablespoon cornstarch (8 g)
• 1 tablespoon olive oil (15 ml)
• 1 teaspoon smoked paprika (3 g)
• 1/2 teaspoon garlic powder (1.5 g)
• 1/2 teaspoon kosher salt (3 g), plus more to serve
• 1/4 teaspoon black pepper (0.8 g)
• 1 teaspoon brown sugar (4 g), optional, for deeper caramel edges
• 1/3 cup mayonnaise (80 g), for the dipping sauce
• 1/2 teaspoon smoked paprika (1.5 g), for the sauce
• 1 teaspoon lime juice (5 ml), for the sauce

Amounts are for the yield below. US customary measures first, grams in brackets for scale users.

Step-by-step instructions

1. Cut the fries evenly. Cut the peeled sweet potatoes into fries about 1/4 inch thick and 3 to 4 inches long, keeping them as even as you can — thin ends scorch while thick middles are still firm if the sizes wander. Put the cut fries in a bowl of cold water.
2. Soak, then dry thoroughly. Leave the fries in the cold water for 15 minutes to draw off surface starch, then drain and dry them very thoroughly with a clean tea towel or paper towels. This drying step is as important as the coating: wet fries steam.
3. Coat with cornstarch and spice. Toss the dry fries in a large bowl with the cornstarch until no white streaks remain. Add the olive oil, smoked paprika, garlic powder, salt, pepper and brown sugar if using, and toss again until every fry is evenly and lightly coated.
4. Heat the air fryer. Heat the air fryer to 400°F (200°C) for 3 minutes. A fully hot basket starts the cornstarch shell setting on contact instead of letting the fries sit and sweat.
5. Air fry in a single layer. Arrange half the fries in a single layer with space between them and cook for 8 to 9 minutes, shaking the basket or turning the fries halfway, until the edges are crisp and caramelised at the tips. Repeat with the second batch, keeping the first warm in a 200°F (93°C) oven.
6. Sauce and serve. While the fries cook, stir the mayonnaise, smoked paprika and lime juice together for the dipping sauce. Tip the fries onto a warm plate, sprinkle with a little extra salt, and serve immediately with the sauce.

Nutrition estimate

Nutrition figures are estimates calculated from standard ingredient data for the yield stated. Your actual values will vary with brands, substitutions and portion sizes — treat them as a guide, not a guarantee.

Storage & reheating

Sweet potato fries are best within minutes of cooking, while the cornstarch shell is at its crispest. Leftovers keep for up to 3 days in an airtight container in the refrigerator and re-crisp well in the air fryer at 375°F (190°C) for 4 to 5 minutes; the microwave makes them soft. Raw cut fries can wait in cold water in the fridge for up to 24 hours before coating and cooking. Nutrition figures are estimates from standard ingredient data and vary with brands and substitutions.

Crispy Air Fryer Sweet Potato Fries

Recipe by Shahid Imran, FryDaily editor · Published 18 October 2026

Crisp edges, soft centres, smoky spice — sweet potato fries that actually crisp.

Yield: 4 servings  ·  Scale: 1x2x3x

Prep15 minutes

Cook18 minutes

Total33 minutes

Servings4 servings

Calories180 kcal

Ingredients

• 2 large sweet potatoes (about 900 g), peeled
• 1 tablespoon cornstarch (8 g)
• 1 tablespoon olive oil (15 ml)
• 1 teaspoon smoked paprika (3 g)
• 1/2 teaspoon garlic powder (1.5 g)
• 1/2 teaspoon kosher salt (3 g), plus more to serve
• 1/4 teaspoon black pepper (0.8 g)
• 1 teaspoon brown sugar (4 g), optional, for deeper caramel edges
• 1/3 cup mayonnaise (80 g), for the dipping sauce
• 1/2 teaspoon smoked paprika (1.5 g), for the sauce
• 1 teaspoon lime juice (5 ml), for the sauce

Tick ingredients off as you prep, and tap a step below to mark it done as you cook. Scaling adjusts the listed amounts - seasoning to taste stays your call.

Instructions

1. Cut the fries evenly. Cut the peeled sweet potatoes into fries about 1/4 inch thick and 3 to 4 inches long, keeping them as even as you can — thin ends scorch while thick middles are still firm if the sizes wander. Put the cut fries in a bowl of cold water.
2. Soak, then dry thoroughly. Leave the fries in the cold water for 15 minutes to draw off surface starch, then drain and dry them very thoroughly with a clean tea towel or paper towels. This drying step is as important as the coating: wet fries steam.
3. Coat with cornstarch and spice. Toss the dry fries in a large bowl with the cornstarch until no white streaks remain. Add the olive oil, smoked paprika, garlic powder, salt, pepper and brown sugar if using, and toss again until every fry is evenly and lightly coated.
4. Heat the air fryer. Heat the air fryer to 400°F (200°C) for 3 minutes. A fully hot basket starts the cornstarch shell setting on contact instead of letting the fries sit and sweat.
5. Air fry in a single layer. Arrange half the fries in a single layer with space between them and cook for 8 to 9 minutes, shaking the basket or turning the fries halfway, until the edges are crisp and caramelised at the tips. Repeat with the second batch, keeping the first warm in a 200°F (93°C) oven.
6. Sauce and serve. While the fries cook, stir the mayonnaise, smoked paprika and lime juice together for the dipping sauce. Tip the fries onto a warm plate, sprinkle with a little extra salt, and serve immediately with the sauce.

Calories: 180 kcalProtein: 2 gCarbohydrates: 29 gFat: 6 gSaturated fat: 1 gSodium: 330 mgFiber: 4 gSugar: 7 g

Recipe by Shahid Imran · FryDaily. Printing? This card is designed to print cleanly on its own.

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