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Oven-Baked Sweet Potato Crisps

Prep Time 5 minutes
Cook Time 30 minutes


  • 1 sweet potato skin on, scrubbed and dried
  • Rapeseed or sunflower oil
  • Sel de GuĂ©rande or Maldon salt
  • Freshly ground black pepper


  1. Preheat your oven to gas mark 3 (170 degrees Celsius / 325 degrees Fahrenheit).
  2. Discard the ends of the sweet potato and slice evenly. Each slice should be 3 to 4 millimetres thick.
  3. Place the sweet potato slices in a large bowl and add one tablespoon of oil. Toss to coat all slices.
  4. Line a baking tray with foil and spread a little oil all over it with kitchen paper.
  5. Arrange the sweet potato slices on the tray so they touch, but do not overlap.
  6. Place the tray in the middle of the oven and bake for 15 minutes.
  7. Flip each slice with wooden tongs and sprinkle with salt and pepper. Bake for another 8 minutes.
  8. Flip again and bake for 4 more minutes and repeat the process once or twice more. Once they are starting to brown and curl at the sides, they are ready and will crisp once taken out of the oven.