Alexia sweet potato fries turn out sweet, crisp at the edges and soft in the middle in under 10 minutes in the air fryer, with no oil and almost nothing to clean up. The hot moving air caramelises the outside while keeping the centre tender, which is the part the oven usually gets wrong. Once you make them this way, the oven feels like the slow option.
They go in straight from frozen, no thawing. The one thing to get right is not crowding the basket, because sweet potato fries carry more natural sugar than regular fries and steam soft when they are piled up. New to the basket? Start with how to bake in an air fryer.
Quick answer: Air fry frozen Alexia sweet potato fries at 400°F (200°C) for 8 to 10 minutes in a single layer, shaking the basket halfway, until crisp and golden. A full bag needs 14 to 16 minutes with a shake every 5 minutes. Cook from frozen, do not thaw, and salt them while warm.
What temperature for Alexia sweet potato fries?
Alexia's own package directions say to air fry at 360°F (182°C). That works, but for crispier edges most home air fryers do better at 400°F (200°C), which is what I use. The higher heat caramelises the natural sugars faster for that golden, crisp finish. If your air fryer runs hot or you want a gentler cook, drop to 360°F and add a couple of minutes. Either way, sweet potatoes brown faster than regular fries, so keep an eye on them in the final minute or two.
Ingredients
- 1 bag Alexia sweet potato fries (any cut, frozen)
- Flaky sea salt (optional)
- Fresh parsley to serve (optional)
The fries come already seasoned and have enough oil to crisp, so nothing else is needed.
How to cook Alexia sweet potato fries in the air fryer
- Preheat the air fryer to 400°F (200°C) for 2 to 3 minutes. A hot basket starts crisping the fries right away.
- Add the frozen fries in a single, even layer. Avoid stacking, since a single layer is the difference between crisp and soggy.
- Air fry at 400°F (200°C) for 8 to 10 minutes for a single layer. For a full bag, cook 14 to 16 minutes.
- Shake the basket halfway through, or every 5 minutes for a full bag, so they brown evenly.
- For extra crisp, add another 1 to 2 minutes, watching closely since the sugars brown fast.
- Tip onto a plate, salt while warm, and serve right away. They soften as they cool.
You can find the full printable recipe in the card below.
Air fryer time chart by amount and cut
How much you put in the basket matters more than the air fryer model. Use this as a starting point and check the fries near the end.
| Amount or cut | Temperature | Time | Notes |
|---|---|---|---|
| Single layer (about half a bag) | 400°F (200°C) | 8 to 10 min | Crispiest result |
| Full bag | 400°F (200°C) | 14 to 16 min | Shake every 5 min |
| Crinkle cut | 400°F (200°C) | 10 to 12 min | A touch longer |
| Waffle fries | 400°F (200°C) | 12 to 14 min | Thicker, needs more time |
| Extra crispy | 400°F (200°C) | add 1 to 2 min | Watch the sugars |
| Reheat leftovers | 375°F (190°C) | 2 to 3 min | Re-crisps them |
Prefer the package setting of 360°F? Use our air fryer calculator to adjust the time, and the times and temperatures chart for the rest of your cooking.
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Tips for extra crispy sweet potato fries
- Cook in a single layer. Air needs to move around each fry, and a packed basket steams them instead.
- Skip the oil. Alexia fries already have enough to crisp, and more just makes them greasy.
- Do not use aerosol cooking spray. It can damage the basket coating over time. A refillable pump spray is fine if you want a touch.
- Shake halfway, or every 5 minutes for a full bag, so they colour evenly.
- Watch the last few minutes. The natural sugars take them from golden to burnt quickly. More on preventing burning.
- Serve right away. Sweet potato fries soften faster than regular fries as they cool.
Seasoning ideas
The fries are seasoned out of the bag, but a quick toss while they are hot takes them further. Add any of these straight after cooking:
- Classic: a pinch of flaky sea salt.
- Garlic Parmesan: 2 tablespoons finely grated Parmesan and 1/2 teaspoon garlic powder.
- Smoky: 1/2 teaspoon smoked paprika, 1/4 teaspoon salt, and a pinch of cayenne.
- Sweet and spicy: a light drizzle of hot honey.
- Everything bagel: 1 teaspoon everything bagel seasoning.
Best dipping sauces
These fries lean into both sweet and savoury dips. A few favourites:
- Chipotle mayo
- Garlic aioli
- Honey mustard
- Spicy ranch
- Maple cinnamon butter
- Sriracha ketchup
- Avocado crema
My favourite is a simple garlic aioli with a squeeze of fresh lime.
What to serve with Alexia sweet potato fries
These fries go with almost anything. A few easy pairings:
- Burgers, chicken sandwiches, turkey burgers, or black bean burgers
- Crispy fish tacos or pulled pork sliders
- Air fryer chicken sausage for a fast, high-protein plate
- Air fryer corn on the cob for a simple summer-style meal
For a breakfast-for-dinner spread, serve them alongside air fryer hash browns. And if you want a crunchy snack to go with them, try our crispy air fryer potato chips.
Storage and reheating
Storage: these are best fresh, but you can keep leftovers in an airtight container in the fridge for up to 3 days.
Reheating: air fry at 375°F (190°C) for 2 to 3 minutes to bring back the crisp. Skip the microwave, which turns them soft.
Frequently asked questions
QDo I need to thaw Alexia sweet potato fries first?
No. Cook them straight from frozen. Thawing makes them soft and they will not crisp the same way.
QWhat temperature is best?
400°F (200°C) gives the crispiest edges in most home air fryers. Alexia's package suggests 360°F (182°C), which works for a gentler cook if you add a couple of minutes.
QCan I reheat leftover sweet potato fries?
Yes. Air fry them at 375°F (190°C) for 2 to 3 minutes until hot and crisp again. The air fryer re-crisps them far better than a microwave.
QAre Alexia sweet potato fries healthier than regular fries?
They bring extra nutrients from sweet potatoes and need no added oil when air fried, so they are a lighter choice than deep-fried fries. The exact numbers are printed on your bag.
QCan I cook the whole bag at once?
Yes, but expect slightly softer fries since a full basket traps steam. For the crispiest result, cook about half a bag at a time in a single layer.
QCan I use a different brand or cut?
Yes. Any frozen sweet potato fry works as a starting point. Thicker cuts like crinkle and waffle need a few extra minutes, so adjust the time to the cut.
If you make these, let me know how they turned out in the comments. Want more quick sides from the basket? Try our air fryer tater tots or browse all of our air fryer side dishes.
You can also follow me on Instagram and Pinterest for more easy air fryer recipes.
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