Air Fryer Roasted Potatoes
Temperature
400°F
200°C
Time
25 min
1.5 lb (700g) potatoes, in large chunks
Heat through to
Piping hot
cooked right through
Prep
20 min
Cook
25 min
Total
45 min
Roast potatoes are the dish the air fryer flatters most - all crust, no forty-minute oven. The method is the traditional one and the parboil is not optional: boil the chunks until the edges soften, shake them hard in the dry pan to rough the surface up, then let the moving air turn that loose starch into a craggy shell. If you want potatoes on the table without a pan on the stove, cut them into a small dice instead and skip the boiling entirely - that is the cubed potatoes page, linked below.
Ingredients
Quantities for 1.5 lb (700g) potatoes, in large chunks - the times on this page assume that much in the basket.
- 1.5 lb (700g) floury potatoes, peeled and cut into large chunks
- 2 tbsp olive oil
- 2 sprigs of rosemary, leaves picked
- 3 garlic cloves, lightly crushed and left whole
- Flaky salt and black pepper
How to air fry roasted potatoes
- Peel the potatoes and cut them into large chunks, roughly halves or quarters rather than dice. Boil them in salted water for 8 minutes, until the edges just yield to a knife but the centers are still firm. Drain them and leave them 2 minutes to steam dry, then put the lid on the pan and shake them hard - the surfaces should look scuffed and floury. Toss through the oil, rosemary, garlic and salt.
- Preheat the air fryer to 400°F (200°C).
- Add the fresh roasted potatoes to the basket. A single layer with space between the chunks - crowded potatoes steam instead of roasting.
- Cook for about 25 minutes, shaking the basket every 8-10 minutes.
Pro tip
Shake the drained potatoes hard in the dry pan before oiling them. Roughing the parboiled surface into loose starch is what makes the crust craggy rather than smooth.
How to tell when it's done
They are ready when the outside is deep golden and sounds brittle as the basket is shaken, and a skewer slides into the middle with no resistance at all. The rough, floury surface you made in the pan should have set into distinct crisp ridges rather than a smooth skin.
Air fryer roast potatoes: why the parboil is the whole recipe
A crust is surface area, and a knife is a bad way to make it. Cut a potato and you get flat faces and clean edges - smooth, and smooth browns evenly but thinly. Parboiling changes what the outside of the potato is: the water gelatinizes the starch in the outer few millimetres and turns it soft and floury, so when you shake the drained chunks against the pan that layer breaks up into ridges, flakes and loose grains. You have not cut a new surface, you have grown one, and every one of those ragged edges is a piece that dries, browns and shatters.
That is also why roast potatoes want a bigger chunk than the cubed version. A 1-inch dice at 380°F cooks its middle in about the same twenty minutes its surface needs to brown, so it needs no head start. A proper roast-potato chunk is too thick for that - raw, it would still be waxy in the center by the time the outside had gone too dark. The parboil cooks the middle in water first, so the air fryer only has one job left, and it can be run hotter and harder: 400°F, moving air, all of it spent on the crust.
Two things will still undo it. The first is water - a wet surface cannot brown, because evaporation pins it near 212°F while the browning reactions need closer to 285°F, so the two minutes of steam-drying after draining is doing real work. The second is crowding. Every chunk gives off steam, and a packed basket traps it, so the batch sits in its own humidity and comes out pale. A single layer with gaps is the difference between roast potatoes and boiled ones with a tan.
Converting from an oven recipe
If your recipe is written for a conventional oven, lower the temperature by about 25°F (15°C) and reduce the time by roughly 20% to land near 400°F for 25 minutes. Need a different starting point? Use the conversion calculator.
Air fryer roasted potatoes: FAQ
How long to cook roasted potatoes in an air fryer?
About 25 minutes at 400°F (200°C) for 1.5 lb (700g) of parboiled chunks, shaking the basket every 8-10 minutes. That is on top of an 8-minute parboil. Raw, unparboiled chunks of this size need longer and never crisp as well - if you want the quick version, cut them down to a 1-inch dice and follow the cubed potatoes page instead, which is 20 minutes at 380°F with no boiling at all.
Why are my air fryer roast potatoes not crispy?
Usually one of three things. They went in wet - drain and steam-dry for two minutes, because a wet surface holds itself near 212°F and cannot brown. They were never roughed up - the shake in the dry pan is what turns the parboiled surface into loose starch, and without it you get a smooth skin instead of a craggy shell. Or the basket was too full: crowded chunks trap each other's steam and the batch effectively boils. A single layer with visible gaps is the fix for the last one.
What are the best potatoes for air fryer roast potatoes?
A floury variety - Maris Piper and King Edward in the UK, russets or Yukon Golds in the US. Floury potatoes have more starch and less water, so the parboil breaks their surface down into exactly the loose, flaky layer the crust is made of. Waxy salad potatoes hold together instead, which is useful in a potato salad and useless here: they will not rough up in the pan, so there is nothing for the air fryer to crisp.
How long does it take to air fry roasted potatoes?
Air fry roasted potatoes at 400°F (200°C) for about 25 minutes, shaking the basket every 8-10 minutes. That's for 1.5 lb (700g) potatoes, in large chunks in a single layer; adjust slightly for a fuller basket or a different model.
What temperature do you air fry roasted potatoes at?
Set the air fryer to 400°F (200°C). If you're converting an oven recipe, that's roughly 25°F (15°C) below the oven temperature, with the time cut by about 20%.
Do I need to preheat the air fryer for roasted potatoes?
A 2-3 minute preheat gives the most accurate timing and the best browning, but it isn't essential - if you skip it, add a minute or two to the cook time.