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–+ servings
Japanese sweet potato chips in bowl.

Japanese Sweet Potato Chips

Matt
Homemade Japanese sweet potato chips are crispy, naturally sweet, and baked or air-fried to golden perfection with just olive oil and sea salt. A wholesome, addicting snack that’s light yet satisfying.
Print Recipe Pin Recipe
Prep Time 2 minutes
Cook Time 30 minutes
Course Appetizer, Side Dish
Cuisine Japanese
Servings 2 people

Ingredients
  

  • 1 Japanese sweet potato medium size
  • 1.5 tablespoon olive oil
  • 3-4 pinches sea salt

Instructions
 

Prep

  • Rinse and clean
    Rinse the sweet potatoes under running water. Gently scrub the skin with your fingers or a vegetable brush to remove any dirt, then pat dry with a paper towel.
  • Slice into chips
    Using a sharp knife or Mandoline, slice the sweet potato evenly into thin chips, about 2–3 mm (¹⁄₁₆–⅛ inch) thick.
  • Lightly coat with olive oil
    Place the slices in a mixing bowl or on a tray. Drizzle with a small amount of olive oil and toss until each chip has a thin, even coating.
  • Season with salt
    Sprinkle fine sea salt over the slices and toss again so every piece gets lightly seasoned.

Oven Method

  • Preheat the oven to 160°C (320°F) and line a baking sheet with parchment paper or lightly oiled aluminum foil for easy cleanup.
  • Arrange the sweet potato slices in a single layer on the baking sheet. Avoid overlapping so they crisp evenly.
  • Bake for 18–25 minutes, flipping the slices halfway through to help both sides turn golden.

Air Fryer Directions

  • Arrange the sweet potato slices in a single, even layer in the air fryer basket. Avoid overlapping for the best crispiness.
  • Air fry at 160°C (320°F) for 10–12 minutes, shaking or flipping halfway through so they cook evenly and turn golden.

Notes

Oven Tip: Keep an eye on the chips near the end of baking. Thinner slices (2 mm or less) can brown faster.
If your chips are not golden brown after 25 minutes, lower the temperature to 130°C (265°F) and bake for another 5 minutes to make the chips crisp without burning.
Air Fryer Tip: Check on them after about 8 minutes, as thinner slices can brown quickly. Adjust the time slightly depending on your air fryer model and slice thickness.
For the best texture and flavor, serve the chips warm right after baking or air-frying.
Keyword air fryer
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