Sweet potato fries in the air fryer hit the perfect balance: crispy on the outside, soft inside and with a natural sweetness that plays off the salt and freshly ground pepper. With just oil and seasoning, you get a side dish or a snack ready in under 20 minutes — no deep-frying and without heating up the kitchen. Peeled sweet potatoes cut into thin sticks, a thin layer of oil, and the hot air in the air fryer does the rest.
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Estimated reading time: 5 minutes
Table of Contents:
Why I love sweet potato fries in the air fryer
Sweet potatoes are tricky in the oven. They contain more water and natural sugar than regular potatoes, and that often results in soft, soggy sticks when baked. The air fryer solves exactly that. The fast hot-air circulation pulls the moisture out of the surface while the starch caramelises and forms the crispy crust you’re after. The inside stays soft and warm without turning watery.
There’s a big practical advantage too. I skip preheating the oven, and the amount of oil is minimal — one tablespoon is plenty for two medium-sized sweet potatoes. The energy use is a fraction of the oven’s, and the washing up is just the basket and a cutting board.
The difference between the air fryer and the oven
Where the oven typically needs 25-30 minutes at 220 °C plus more oil to give comparable crispiness, the air fryer manages it in 14-18 minutes at 200 °C with significantly less fat. The sticks don’t need to be turned manually along the way either — one shake halfway through is enough to distribute the heat evenly.
My kitchen test of sweet potato fries
I’ve tested the sweet potato sticks in both my Cosori Dual Blaze and my Philips XXL. In the Cosori I can split the portion between the two baskets and make a larger batch at once — handy when the whole family needs something on the table. The sweet spot landed at 200 °C for 16 minutes with one shake after 8 minutes. The sticks got a distinct outer crust and a soft, warm inside without being soggy. Thinner sticks around 0.8 cm gave the best crispiness; if I went over 1.2 cm thick, the inside got too moist and the outside lost its bite. In the Philips XXL I ran the same time and temperature and got similar results for a smaller portion in a single layer.
Cut the sticks to an even thickness. Unevenly thick sticks give you either burnt or soft results in the same batch — it’s the most common mistake with sweet potatoes.
Tips and tricks from the author: Morten Jensen
The typical mistakes and how to avoid them
The first mistake is overcrowding the basket. When the sticks lie on top of each other, they steam instead of crisping up, and the result is soft fries with no bite. Lay them in a single layer with space between them, and cook in two batches if the portion is large. The second classic is using too little oil. Without a thin layer of fat, the starch doesn’t get the caramelisation that creates the crunch, so stick to a minimum of one tablespoon per two medium-sized potatoes. The third mistake is salting before cooking. Salt draws moisture out of the sweet potatoes, and that moisture makes the sticks wet in the air fryer. Season after cooking, not before — it’s one of the most important details.
How to serve sweet potato fries
The sticks work both as a side dish and as a snack. My favourite is with a creamy dip and a little fresh parsley scattered over after cooking.
- As a side dish with a burger, grilled chicken or a good steak
- With aioli, chipotle mayo or homemade ranch as a dip
- Sprinkled with paprika or chilli flakes after cooking for extra depth
- As a pure snack for TV night with a creamy dressing
Storage and reheating
The fries taste best freshly made, but can be stored in an airtight container in the fridge for up to two days. Reheat them in the air fryer at 180 °C for 4-5 minutes — that way they regain much of their original crispiness. The microwave is a bad idea, as the moisture makes them soft and unappetising.
Sweet potatoes in the air fryer are one of the simplest upgrades you can make to the weekly menu. Once you’ve got the technique down and the basket isn’t overcrowded, you end up with sticks that look like the restaurants’ — no deep-frying and no waiting.
FAQ
Thin sticks around 0.8 cm take 14-18 minutes at 200 °C. Remember to shake the basket once halfway through for even heat.
It’s not necessary for sweet potatoes. Unlike regular potatoes, the surface starch isn’t a problem — peel, cut and toss directly with oil.
You can, but the result will be noticeably less crispy. A thin layer of oil is essential for the caramelisation — one tablespoon is enough for two medium-sized potatoes.
Recipe
Sweet Potato Fries in the Air Fryer
Cooking Guide
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Cost of the dish
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Our estimate is based on average food prices for the current year 2026.
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Airfryer size
All our recipes are tested in a Philips Airfryer 2000 Series NA230/00 – 6.2 L
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How to make it
Preparation
- Peel 800 g sweet potatoes and cut them into even, thin sticks about 1 cm thick. The more even the sticks are in size, the more even the crispiness will be.
- Toss the sticks thoroughly in a bowl with 2 tbsp olive oil, 1 tsp salt and 0.5 tsp freshly ground pepper, so that all the pieces are evenly coated.
Cooking in the Air Fryer
- Preheat the air fryer to 200 °C convection.
- Place the fries in the basket in a single layer without overlapping. Cook at 200 °C for 15-18 minutes, shaking the basket about halfway through so the fries become evenly crispy on all sides.
- Serve immediately while the fries are hot and crispy.
Our notes for the recipe
Cut the sticks to an even thickness — this is the most important factor for even crispiness. Avoid overcrowding the basket; the fries should ideally not lie on top of each other, or they will turn soft instead of crispy. Variation:
Season with paprika, garlic powder, or smoked paprika before cooking for extra flavour. A sprinkle of parmesan or fresh parsley scattered over after cooking lifts the dish even further. Serving:
Serve as a side dish with burgers, grilled chicken, or fish. Also great with a homemade aioli, sweet chilli dip, or Greek yoghurt mixed with lime juice. Portion size:
If your air fryer is smaller, you can make the fries in two batches and keep the first batch warm in the oven at 100 °C while you make the next.
Your notes for the recipe
Nutrition per serving (Guideline)
Important about shelf life and nutrition
Nutrition per serving (guideline): Calculations are based on data from the United States Department of Agriculture (USDA). Shelf life (guideline): Shelf life data is provided, as far as possible, by public institutions, including national food authorities. Our information is therefore only indicative, and it is your responsibility to obtain and calculate accurate information about shelf life and nutrition for all recipes on airfryerkogebogen.dk
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