Last Updated on 24 August 2026 by cooksimply
To cook frozen roast potatoes in an air fryer, tip them into the basket in a single layer and air fry at 200°c (400°F) for 15 to 20 minutes, shaking halfway through. There’s no need to defrost them or add oil, as they’re already coated. Cook a big pack in batches for the crispiest results.
I’ll quite happily devour potatoes in any form, whether fried, diced, in their jackets or mashed. But after frozen French fries, roast potatoes are my favourite, perhaps the perfect side dish. Who doesn’t love crispy roast potatoes with fluffy insides alongside a roast dinner with lashings of gravy?
Making roast potatoes from scratch is simple enough. You parboil peeled, evenly sized potatoes until fork-tender, toss them in the colander to rough up the edges, then roast them in plenty of oil until golden and fluffy. But there’s a quicker, healthier alternative. I’d never claim air fryer frozen roast potatoes beat the homemade version, but they’re a great option when you’re short on time or just need a reliable side for a midweek dinner.
In this recipe you’ll learn how to:
- Get crispy, golden frozen roast potatoes on the table in around 22 minutes, no thawing
- Cook them straight from frozen with no oil and barely any effort
- Avoid the mistakes that leave them soggy or unevenly browned
Why cook frozen roast potatoes in an air fryer?
The air fryer is one of those appliances I now use all the time, and frozen roast potatoes are exactly the kind of thing it does brilliantly. Hot air circulates around the potatoes, crisping the outside without needing extra oil, which makes them a little healthier than oven-roasting in fat. They’re also faster, done in around 20 minutes rather than the 40-plus a batch takes in the oven, and they free up your oven if you’re cooking a bigger meal.
The other advantage is convenience. There’s no peeling, chopping, parboiling or roughing up edges. You tip them in from frozen, and the air fryer does the rest.
What are the best frozen roast potatoes?
You can use any brand of frozen roast potatoes in the air fryer, and honestly most give good results. I like Aunt Bessie’s, as they’re tasty, well-priced and a decent size, but McCain, supermarket own-brands and value ranges all crisp up well and have very similar timings. The key thing they have in common is a coating that helps them go golden, so they’re a natural fit for the air fryer.
If you have homemade roast potatoes left over and frozen, those work too, though they may need a minute or two longer.
Ingredients
- Frozen roast potatoes of your choice (I use Aunt Bessie’s)
- Seasoning, if needed (salt, pepper, garlic powder, or dried rosemary are good options)
That’s it. Most frozen roast potatoes are already seasoned and oiled, so the second ingredient is entirely optional.
How to cook frozen roast potatoes in an air fryer
Preheat the air fryer. Set it to 200°c (400°F) and preheat for around 5 minutes, or use the preheat setting if yours has one. Preheating isn’t strictly essential, but it does help the potatoes crisp up from the moment they hit the basket.
Add the potatoes. Tip the frozen roast potatoes into the basket in a single layer, straight from the freezer. Don’t thaw them first, as frozen is what gives you that crisp outside and fluffy middle. There’s no need to add oil, as they’re already coated.
Cook a big pack in batches. If you’re doing a full pack, don’t cram it all in. Overcrowding stops the air circulating, and you’ll get soft, pale patches. A basketful in a single layer, cooked in two batches if needed, gives you the crispiest result.
Air fry for 15 to 20 minutes. Cook at 200°c (400°F), shaking the basket or turning the potatoes halfway through so they brown evenly. This is also when you can add any seasoning.
Check and serve. They’re ready when golden brown and crisp outside with a fluffy middle. If they need a little longer, give them a few more minutes. Serve straight away while they’re at their crispiest.
Common mistakes to avoid
Frozen roast potatoes are about as easy as cooking gets, but a couple of things can leave you with a disappointing batch. Here’s what to watch for.
- Overcrowding the basket. This is the big one. Pile too many in, and they steam rather than crisp, leaving soft, pale spots. Keep them to a single layer and cook a large pack in batches. Aunt Bessie’s own guidance suggests around 250g per batch for the crispiest results.
- Thawing them first. Don’t. Frozen roast potatoes are designed to go straight from the freezer into the heat. Thawing makes them soft and soggy before they even start cooking.
- Not shaking the basket. A halfway shake is what gives you even browning on all sides. Skip it, and you’ll get crisp tops and pale bottoms.
- Adding oil. They’re already coated in oil, so extra just makes them greasy. Leave it out.
- Letting them sit. Frozen roast potatoes lose their crunch as they cool. Serve them hot, straight from the basket, rather than letting them stand.
- Seasoning too early. If you’re adding salt or herbs, do it at the halfway shake or at the end. Seasoning frozen potatoes before they’ve started to cook doesn’t help it stick.
Tips for the crispiest results
- Preheat the basket first, so the potatoes start crisping straight away.
- Cook in a single layer and use batches for a big pack.
- Shake or turn halfway through for even browning.
- Keep an eye on them, since air fryers vary in strength. Check a few times and adjust the time to hit your preferred crispiness.
- Get creative with seasonings if you like. Garlic powder, paprika, dried rosemary, grated parmesan or a little truffle oil at the end all work brilliantly.
- Serve immediately for the best texture.
Serving suggestions
Frozen roast potatoes might be a shortcut, but they still deserve a good plate around them. Here’s how I like to serve them.
- With a roast dinner. The obvious one. Serve them alongside roast chicken, beef or a gammon joint with plenty of gravy. Pair them with air fryer parsnips and stuffing balls for an easy roast without a full oven’s worth of effort.
- As a midweek side. They’re perfect next to sausages, chicken thighs, or a simple piece of fish for a quick weeknight dinner.
- With eggs for brunch. Crispy roast potatoes alongside fried or poached eggs make a proper weekend breakfast.
- As a snack with dips. Serve them hot with garlic mayo, sour cream, or a spicy ketchup for dunking. They’re good enough to eat on their own.
Can you keep leftover roast potatoes?
Yes. Store any leftovers in an airtight container in the fridge for up to three days. To reheat, pop them back in the air fryer at around 200°c (400°F) for 10 minutes, which brings back the crunch far better than a microwave. I wouldn’t recommend freezing already-cooked potatoes, as the texture suffers.
Frequently asked questions
Can you cook frozen roast potatoes in an air fryer?
Yes, and they come out brilliantly. Cook them straight from frozen at 200°c (400°F) for 15 to 20 minutes, shaking halfway. No need to defrost or add oil.
Do you need to defrost frozen roast potatoes first?
No. Cook them straight from frozen. Thawing them first makes them soft and stops them crisping up properly.
How long do frozen roast potatoes take in the air fryer?
Around 15 to 20 minutes at 200°c (400°F), depending on their size and your air fryer. Check them near the end and add a few minutes if you want them extra crispy.
Do you need to add oil?
No. Frozen roast potatoes are already coated in oil, so they crisp up without any extra. Adding more just makes them greasy.
Why aren’t my frozen roast potatoes crispy?
Almost always overcrowding. If the basket is packed, the air can’t circulate and they steam instead of crisping. Cook them in a single layer, in batches if needed, and shake the basket halfway.
Can I cook a whole bag at once?
Only if it fits in a single layer, which a full 800g pack usually won’t. For the crispiest results, cook a big pack in two batches rather than piling it all in.
What’s the best temperature for frozen roast potatoes?
200°c (400°F) works well for most air fryers and most brands. If yours runs hot, check them a little earlier.
Other air fryer recipes you might like
Air fryer frozen french fries
Air fryer diced potatoes
Air fryer crispy karaage chicken
Air fryer crispy chicken wings
Air fryer Chinese pork belly
Air fryer soy sauce chicken thighs
Easy frozen roasted potatoes in an air fryer
Ingredients
- 1 pack approx 800g frozen roast potatoes of your choice (I use Aunt Bessie's)
- Seasoning if needed salt, pepper, garlic powder are good options
Instructions
- Preheat your air fryer for 5 minutes at 200°c (400°F).
- Add the frozen roast potatoes to the basket in a single layer, straight from frozen. There's no need to spray them with oil. For a full pack, cook in batches so they're not overcrowded.
- Air fry for 15 to 20 minutes at 200°c (400°F).
- Shake the basket or turn the potatoes halfway through to ensure even cooking. This is when you can add any seasoning.
- Depending on your air fryer model, they may need a little less or more time, so check on them a few times.
- Serve straight away with your favourite meal.
Notes
Nutrition
Did you make these air fryer frozen roasted potatoes?
Please let me know how these air fryer roast potatoes turned out for you. Leave a comment below and tag @cooksimplyathome on Instagram. If you’d like more food inspiration, check out my index.
