Air-Fryer Crispy Root-Vegetable Crisps
Parsnip, beetroot, sweet potato, and carrot — all sliced paper-thin on a mandoline, tossed in a teaspoon of oil, air-fried low and slow until they go cracker-crisp. The chip-aisle snack made from things that were rolling around at the bottom of the vegetable drawer.
The mixed root-vegetable crisp is one of the smart small uses for the air fryer. The technique is the same one used for apple chips: low temperature, long time, paper-thin slices. The difference is the snacks coming out are savoury — earthy, mineral, with the kind of textural variety that mass-produced crisps can't replicate.
The vegetables that work: parsnip (sweet, nutty), beetroot (deep red, earthy), sweet potato (orange, sweet), carrot (mild, slightly herbal). Skip waxy potatoes — they're a different snack with a different technique. The trick is uniform thinness, which means a mandoline is non-optional unless your knife skills are extraordinary.
The seasoning is salt-forward but minimal: sea salt, a little black pepper, maybe a pinch of thyme or rosemary. Don't drown them in spices — the vegetable flavour is what you're going for. The colour variation from the multiple roots is the visual hook.
The photo shows them in a wide white ceramic bowl: a mix of purple-red beetroot crisps, orange sweet potato, golden parsnip, amber carrot, all dusted with sea salt. The kind of snack that photographs better than anything you'd buy in a bag.
Method
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01
Slice on a mandoline
Slice each vegetable into 1/16-inch (about 1.5mm) rounds. A
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02
Toss in oil
In a large bowl, gently toss all the slices with olive oil
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Air fry — low and slow
Heat the air fryer to 300°F (150°C). Arrange the slices in a
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Cook with shaking
Cook each batch for 16–22 minutes, shaking the basket every
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05
Cool on a rack
Transfer the cooked crisps to a wire rack as they come out.
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06
Combine and serve
Once all batches are done and cool, combine in a single bowl.