Air Fryer Potatoes: Crispy Roast Potatoes and Perfect Jacket Potatoes

Potatoes are where an air fryer earns its keep. Get the technique right and you'll pull out roast potatoes with a shatteringly crisp, craggy crust and a fluffy centre in a fraction of the time an oven takes, or a jacket potato with skin that crackles like a crisp and flesh that steams itself soft. Get it wrong and you end up with pale, soft, faintly sad potatoes that never quite got there.

This guide covers both jobs properly: crispy air fryer roast potatoes and classic air fryer baked (jacket) potatoes. We'll go through the right potato varieties for each, exact temperatures and times, the parboiling technique that makes the biggest difference to crunch, and what to do when things go soggy, dry, or unevenly cooked.

Choosing the Right Potato

Not all potatoes behave the same way in an air fryer, and the variety you choose matters more than almost any other single factor. The key distinction is floury versus waxy.

Floury Potatoes (Best for Roasting and Baking)

Floury potatoes have a high starch, low moisture content. When cooked, that starch structure breaks down and fluffs up, which is exactly what you want for a roast potato's crumbly interior and for the light, fluffy centre of a good jacket potato. In Australian supermarkets and greengrocers, look for:

• Sebago (often labelled "brushed potatoes") — the most widely available all-rounder, reliably floury
• Coliban — smaller, very floury, excellent for roasting and mash
• Royal Blue — a South Australian favourite, great texture for baking
• King Edward — floury with good flavour, sold in some greengrocers and specialty stores
• Russet/Idaho-style potatoes — sometimes stocked as "baking potatoes," ideal for jackets

Waxy Potatoes (Avoid for This)

Waxy varieties like Desiree, Nicola, and small chats/baby potatoes hold their shape well and are great for salads or pan-frying, but they don't fluff up in the same way. They'll roast fine and hold together nicely, giving a firmer, denser texture rather than the classic light, crumbly roast potato interior. Desiree in particular has a waxier profile than many people expect given its red skin, so if your roast potatoes have come out a bit dense in the past, this is often why.

Crispy Air Fryer Roast Potatoes

The single biggest factor in getting genuinely crispy air fryer roast potatoes isn't the air fryer at all — it's what you do to the potato before it goes in.

The Parboil-and-Rough-Up Technique

This is the technique that separates good roast potatoes from great ones, and it works just as well in an air fryer as it does for a traditional oven roast.

1. Peel and cut your floury potatoes into even chunks, roughly 4-5cm — large enough to keep a fluffy centre, small enough to crisp all over.
2. Parboil in a pot of salted water for 8-10 minutes, until a knife meets slight resistance but the outer edge is starting to soften. You want them par-cooked, not falling apart.
3. Drain thoroughly and let them sit in the colander for a couple of minutes so excess water evaporates.
4. Rough up the edges by shaking the colander with the lid on, or tossing the potatoes around in the pot. This roughens the surface starch, creating all the little craggy edges that turn into the crispiest bits once air fried.
5. Toss in oil — about 1-2 tablespoons for a full batch — plus a good pinch of salt. Olive oil, rice bran oil, or a light vegetable oil all work well; just make sure every piece is lightly coated, not swimming.

Temperature and Time

Once parboiled and roughed up, air fry at 200°C for 20-25 minutes, shaking the basket halfway through (around the 10-12 minute mark) to turn the pieces and expose new surfaces to the hot air. For a single layer in a standard 5-6L basket, this timing holds well; if you're doing a larger batch across two batches or a bigger basket-style air fryer, check at the 18-minute mark and extend in 3-4 minute bursts until they're deep golden and crisp all over.

If you prefer to skip parboiling for convenience, it can be done — cut potatoes tossed in oil and air fried at 200°C for around 30-35 minutes, shaking every 10 minutes, will still crisp up reasonably well. But the texture won't match the parboiled method; the interior tends to be firmer and less fluffy, and the exterior crunch is noticeably less pronounced.

Flavour Variations

Once you've got the base technique down, this is where you can play. Add a few smashed garlic cloves and sprigs of rosemary to the basket for the last 8-10 minutes of cooking (adding them earlier risks burning). A light dusting of semolina or rice flour after tossing in oil gives an even crunchier crust, similar to a traditional Sunday roast trick. For extra richness, a small amount of duck fat or beef dripping instead of oil takes these into proper feast-day territory.

Perfect Jacket Potatoes (Baked Potatoes) in the Air Fryer

An air fryer is genuinely one of the best tools for a jacket potato — better than a conventional oven in most home kitchens, because the compact chamber and constant air circulation crisp the skin far more effectively than a large oven cavity does, and it's much faster.

Preparing the Potato

Choose whole, evenly sized floury potatoes — Sebago, Royal Blue, or Russet-style are ideal. Wash and dry thoroughly, then:

• Prick the skin 6-8 times with a fork or skewer, spaced around the potato. This lets steam escape as the potato cooks, preventing pressure building up inside (and yes, an unpricked potato really can split or, in rare cases, burst).
• Rub with oil all over the skin — olive oil or vegetable oil both work. This is essential for a crispy, blistered skin rather than a leathery one.
• Season generously with salt, rubbing it into the oiled skin. This is what gives jacket potato skin its signature crackling texture and flavour.

Temperature and Time by Size

Air fry at 200°C, turning the potatoes once halfway through cooking. Timing depends on the size of the potato:

• Small potatoes (around 150-180g): 35-40 minutes
• Medium potatoes (around 200-250g): 40-50 minutes
• Large potatoes (300g+): 50-60 minutes

These times are noticeably faster than a conventional oven, which typically needs 60-90 minutes for the same result. If you're cooking multiple potatoes of different sizes, group similar sizes together or check the smaller ones early so they don't overcook while larger ones catch up.

How to Tell When It's Done

The most reliable test is to squeeze the potato gently (using a tea towel or oven mitt, since it will be hot) — it should give easily and feel soft all the way through, with no firm resistance in the centre. You can also insert a skewer or thin knife into the middle; it should slide in with no resistance and come out clean. The skin should be deep golden-brown, crisp, and slightly blistered rather than pale and soft.

Cooking From Frozen or Chilled

Fresh, room-temperature potatoes cook most evenly. If cooking straight from the fridge, add roughly 5-10 minutes to the times above. Cooking a jacket potato from frozen isn't recommended — it tends to cook unevenly, with an overcooked exterior and a stubbornly cold centre.

Avoiding Soggy Potatoes

Sogginess is almost always caused by one of a handful of things, and each has an easy fix.

• Too much oil. More oil doesn't mean more crispness — it means the potato ends up frying in its own pooled oil rather than being crisped by hot air. A light, even coating is all you need.
• Overcrowding. As above, a packed basket traps steam instead of letting it escape, and steam is the enemy of crisp skin.
• Skipping the dry-off after parboiling. Wet potato surfaces steam before they crisp. Give parboiled potatoes a few minutes to air-dry in the colander before oiling.
• Not shaking or turning. Potatoes sitting in one position the whole cook will develop soft, pale patches where they touch the basket or each other. A shake or turn halfway through is non-negotiable.
• Basket not preheated. Adding potatoes to a cold air fryer means the first several minutes are spent just getting the appliance up to temperature, during which the potato surface can turn gummy rather than starting to crisp immediately. A 3-4 minute preheat at your target temperature helps.

Troubleshooting

Roast Potatoes Are Cooked But Not Crispy

This is almost always a parboiling or oil issue. Make sure you're parboiling long enough to soften the outer edge (8-10 minutes), roughing up the surface properly after draining, and using enough oil to coat every piece — but not so much that it pools. Extending the cooking time by 5 minutes at the end, once the potatoes are already tender, can also push the exterior further into genuinely crisp territory.

Potatoes Are Crispy Outside But Hard or Undercooked Inside

Your pieces are likely too large, or the parboil stage was too short. Cut potatoes to a more even 4-5cm size and make sure the parboil goes long enough that a knife meets some resistance but isn't fighting you.

Uneven Cooking — Some Pieces Done, Others Not

Check your basket isn't overcrowded and that pieces are reasonably uniform in size. Different air fryer models also have hot spots; if yours consistently cooks unevenly, shake more frequently (every 7-8 minutes rather than just once).

Jacket Potato Skin Won't Crisp Up

Not enough oil or salt on the skin is the usual culprit — don't be shy with either. Also check you're cooking at a high enough temperature (200°C, not a lower "gentle" setting) and that the potato has enough space around it for air to circulate.

Jacket Potato Splits Open

This happens when the skin isn't pricked enough to let steam escape as the potato cooks. Go over it again next time with 6-8 fork pricks spaced evenly around the potato.

Potatoes Taste Bland

Salt applied before cooking, not just after, makes a real difference — it seasons as the moisture cooks off rather than just sitting on the surface. For roast potatoes, a proper toss in oil and salt before air frying (not a light spray) is what carries flavour through the crust.

Quick Reference

Whether it's a big tray of roast potatoes for Sunday lunch or a quick jacket potato for a weeknight dinner, the fundamentals are the same: choose a floury potato, don't skip the prep steps that build texture (parboiling for roasties, pricking and oiling for jackets), give the potatoes room to breathe in the basket, and cook them at a proper high heat rather than rushing at a lower one. Once you've done it a couple of times, air fryer potatoes — in either form — become one of the easiest, most reliable things you can put in the appliance.