Air Fryer Recipe

Crispy Polenta Chips

  • Prep: 10 min
  • Cook: 15 min
  • Total: 25 min
  • Serves: 4
  • Category: Snacks
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Crispy Polenta Chips

Polenta chips are a crunchy and delicious snack, perfect for air frying and a healthier alternative to traditional fried snacks.

Ingredients

  • 200g polenta
  • 500ml vegetable stock
  • 50g grated Parmesan cheese
  • 1 tablespoon olive oil
  • Salt and pepper, to taste
  • Optional seasoning: garlic powder, smoked paprika, or rosemary

Method

  1. Bring vegetable stock to a boil in a medium saucepan.
  2. Slowly whisk in the polenta, stirring continuously to prevent lumps.
  3. Reduce heat to low and stir until polenta thickens and pulls away from the pan, about 20 minutes.
  4. Remove from heat and stir in Parmesan cheese, olive oil, salt, pepper, and any additional seasonings.
  5. Transfer mixture to a lined baking tray, spread evenly to 1.5 cm thickness, and allow to cool completely until set.
  6. Cut set polenta into chip-like shapes.
  7. Preheat air fryer to 200°C.
  8. Lightly brush or spray polenta chips with olive oil.
  9. Air fry chips in a single layer for 15-20 minutes, shaking halfway through, until golden and crispy.
  10. Adjust seasoning if necessary.

Why this works in an air fryer

Cooling sets the starch gel so the chips hold clean edges; air-fryer convection then drives moisture from the cut surfaces while a thin oil film helps browning and heat transfer. Parmesan adds protein and fat, giving a more savoury, blistered crust without needing deep frying.

Equipment notes

Assumes a 5–6 litre basket holding about half the chips in one loose layer; in a single-drawer model cook in batches, while dual-zone fryers need the trays swapped or shaken more decisively as the inner sides often brown faster than the outer edges.

Common pitfalls

  • Chips bend or smear when cut? The polenta has not fully set; chill the tray for 1–2 hours and cut with an oiled knife rather than adding more dry polenta at this stage.
  • Exterior browns but the centre tastes wet or porridge-like? The slab was too thick or the chips are crowded; keep to about 1.5 cm thickness and leave visible gaps so steam can escape.
  • Pale, dry surfaces after 15 minutes? Too little oil or a very dry Parmesan-heavy surface; mist lightly again and cook 3–5 minutes longer, turning once for even contact with hot air.
  • Chips stick to the basket or tear when shaken? They were moved before a crust formed; oil the basket lightly and leave them undisturbed for the first 8–10 minutes before shaking gently.

Variations & substitutions

  • Use quick-cook polenta if preferred, but reduce the hob cooking time according to the packet and make sure it is very thick before setting or the chips will slump.
  • Swap Parmesan for Grana Padano or pecorino; pecorino is saltier and browns faster, so season more cautiously and check a couple of minutes early.
  • Add smoked paprika or garlic powder to the cooked polenta rather than dusting only the outside; it seasons the centre and reduces the risk of loose spices scorching in the air fryer.
  • For a dairy-free version, omit the cheese and add 1 tablespoon nutritional yeast plus a little extra olive oil; the crust will be slightly less blistered but still crisp if well chilled.

Storage & reheating

Keep cooked chips in the fridge for up to 3 days and reheat in a single layer at 190°C for 5–7 minutes, turning once, until the edges are crisp again.

Nutrition

Calories: 250

Equipment you'll need

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