Air Fryer Apple Chips (No Sugar Added)
Properly crisp, not chewy — which comes down to slice thickness and a temperature far lower than you’d expect. Plus the version that works if you’re strictly low-carb.
Apple chips are the snack that sounds effortless and then comes out bendy. You slice an apple, throw it in the air fryer at the temperature you use for everything else, and twelve minutes later you have warm floppy apple. Edible. Not a chip.
The fix isn’t more time at the same heat — that just browns them. It’s the opposite of how you cook most things in an air fryer: thin slices and a low temperature for longer, because you’re dehydrating rather than roasting. Once the water is gone, the crispness arrives on its own.
I’ll be straight with you about the carbs on this one, because most low-carb sites won’t be — and then give you a genuinely low-carb alternative that works surprisingly well.
Quick Answer
Slice apples ⅛-inch thin (a mandoline is close to essential) and air fry at 300°F for 16–20 minutes, flipping halfway. They crisp fully as they cool, not in the basket — so pull them when they’re dry to the touch and still slightly pliable.
The honest carb note. Apples are not a keto food. A medium apple carries about 21g net carbs, and dehydrating it doesn’t remove a single one — it removes water, which concentrates the sugar per gram. What makes these workable is portion: half an apple, sliced thin, spreads a modest carb load across a satisfying volume of chips. That’s roughly 10g net carbs per serving. Fine on a Mediterranean-leaning approach or as an occasional treat; not something to eat daily on strict keto. If you’re holding under 20g a day, skip to the chayote version below — it’s the same technique at about 3g.
Cinnamon Air Fryer Apple Chips
Ingredients
- 1 firm apple (Granny Smith or Honeycrisp)
- 1 tsp ground cinnamon
- Squeeze of lemon juice
- Pinch of sea salt
- Optional: ½ tsp allulose, if your apple is on the tart side
Method
- Slice as thin as you can, evenly. ⅛-inch or thinner. A mandoline makes this straightforward; by knife it’s possible but the uneven slices will finish at different times. Core them or leave the core — the little star in the middle is pretty and perfectly edible.
- Toss with lemon, cinnamon and salt. The lemon stops browning and sharpens the flavour; the salt is what makes them taste like a snack rather than fruit.
- Single layer, 300°F, 16–20 minutes. Overlapping slices steam each other and stay soft. Two batches, always.
- Flip at the halfway point — tongs, not a shake. A shake will fold them over onto each other.
- Pull them when dry to the touch and still a little bendy. They will not feel crisp in the basket.
- Cool completely on a rack, in a single layer. This is where the crisp actually happens, over about 10 minutes. Piling them warm traps steam and undoes the whole thing.
Still chewy after cooling? They needed longer, not hotter. Return them for 3–4 minutes at 300°F and cool again. Raising the temperature browns the sugars before the water has gone.
The Strictly Low-Carb Version: Chayote “Apple” Chips
Chayote is a pale green squash with a mild flesh that behaves remarkably like apple when it’s cooked with acid and cinnamon. It’s the standard trick in mock-apple pie recipes, and it works even better as chips, because the texture question matters less when everything ends up crisp anyway.
It won’t fool a food critic. But at roughly 3g net carbs per serving against 10g, it’s a genuine everyday option rather than an occasional one — and the cinnamon-and-lemon flavour is doing more of the work than the fruit is in either version.
Chayote Mock-Apple Chips
The genuinely keto oneIngredients
- 1 chayote squash, peeled
- 1 tbsp lemon juice (more than the apple version — this is doing the flavour work)
- 1 tsp ground cinnamon
- 1 tsp granulated allulose
- Pinch of nutmeg and sea salt
Method
- Peel the chayote and slice ⅛-inch thin, discarding the soft central seed.
- Toss thoroughly with lemon juice and let it sit 5 minutes — the acid is what shifts it towards tasting like apple.
- Add cinnamon, allulose, nutmeg and salt, toss again.
- Air fry at 300°F for 20–22 minutes in a single layer, flipping halfway. Chayote holds slightly more water than apple, so it takes a couple of minutes longer.
- Cool completely on a rack before eating.
Can’t find chayote? Thinly sliced zucchini works with the same treatment, though it’s more obviously vegetal. Look for chayote in Latin American and Asian grocers, often labelled chow chow or mirliton.
Apple vs Chayote: The Honest Comparison
| Apple chips | Chayote chips | |
|---|---|---|
| Net carbs per serving | ~10g | ~3g |
| Taste | Obviously apple | Close, cinnamon carries it |
| Texture | Crisp, slightly leathery edges | Crisper, more uniform |
| Cook time | 16–20 min | 20–22 min |
| Availability | Everywhere | Latin American and Asian grocers |
| Best for | An occasional treat | An everyday low-carb snack |
Why Low and Slow Is the Whole Trick
Almost everything else you cook in an air fryer benefits from high heat and short times — that’s the appliance’s entire selling point. Apple chips are the exception, and understanding why makes them reliable.
You’re not roasting; you’re dehydrating. The goal is to drive water out of the slices slowly enough that the sugars don’t scorch before the moisture has gone. At 380°F the outside caramelises and darkens in eight minutes while the middle is still wet, which gives you a chip that’s simultaneously burnt and bendy. At 300°F the water leaves first, and what’s left crisps cleanly.
It’s the same reason the temperature cheat sheet lists dried fruit and herbs separately from everything else — different physics, different settings.
Storing Them
Airtight container at room temperature, and only once they are completely cool — the smallest amount of residual warmth creates condensation and you’ll open the jar tomorrow to soft chips. Stored properly they hold their crispness for about four days.
If they do go soft, three minutes at 300°F and a proper cool-down brings them back. Don’t refrigerate them; the humidity in a fridge is exactly what you spent twenty minutes removing.
A note on long, low cooking
Twenty minutes at low heat means your basket surface is in sustained contact with food, which is the scenario worth thinking about if you use your air fryer most days. I went through the PTFE and PFAS question in The Best Non-Toxic Air Fryer for Anti-Inflammatory Cooking — a one-time decision rather than an ongoing worry.
More Air Fryer Desserts
The full collection — including what genuinely doesn’t work in an air fryer — is in Keto Air Fryer Desserts: The Complete Guide. For strictly keto options with no carb caveat at all, the cheesecake bites and almond flour brownies are the two I make most, and the coconut flour cookies are the lightest of the three.
And if you’re weighing up where a higher-carb treat fits into an otherwise low-carb week, what a cheat day actually does to inflammation is worth reading before you decide.
Frequently Asked Questions
Why are my air fryer apple chips not crispy?
Three usual causes: slices too thick (aim for ⅛-inch), temperature too high (300°F, not 380°F), or you judged them in the basket. Apple chips crisp as they cool on a rack over about 10 minutes, not while cooking — they should still feel slightly bendy when you take them out.
Are apple chips keto-friendly?
Not really. A medium apple carries around 21g net carbs and dehydrating removes water, not sugar. A half-apple portion works out around 10g net carbs, which suits a Mediterranean-leaning low-carb approach as an occasional treat but doesn’t fit strict keto. The chayote version in this post delivers the same idea at about 3g.
What are the best apples for air fryer apple chips?
Firm varieties hold their shape best. Granny Smith gives the tartest, crispest result and the lowest sugar; Honeycrisp and Pink Lady are sweeter and brown a little faster. Avoid soft varieties like McIntosh, which collapse before they dry.
Do I need a mandoline for apple chips?
Not strictly, but it’s the difference between reliable and hit-or-miss. Uneven hand-cut slices finish at different times, so some burn while others stay soft. If using a knife, slice as thinly and consistently as you can and check the batch a few minutes early.
Can you make apple chips without sugar?
Yes — this recipe has none added. Apples contain plenty of their own sugar, and concentrating it through dehydration makes added sweetener unnecessary. Cinnamon and a pinch of salt do far more for the flavour than sugar would.
What is chayote and does it really taste like apple?
Chayote is a mild pale-green squash, sometimes sold as chow chow or mirliton. Cooked with lemon and cinnamon it takes on a distinctly apple-like character — the long-standing trick behind mock-apple pie. It won’t fool anyone paying close attention, but as a crisp cinnamon chip at 3g net carbs it stands on its own.