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Sweet potato fries and a silver bowl of dip on a wooden plate.

Baked Japanese Sweet Potato Fries

Japanese Sweet Potatoes are purple on the outside and white on the inside. They are naturally sweet and are incredibly delicious. Try making these baked Japanese Sweet Potato fries for a nutritious and tasty side dish. Gluten-free and vegan.

  • Total Time: 50 minutes
  • Yield: 2 servings 1x


  • 2 Japanese sweet potatoes, scrubbed and patted dry
  • 2 tablespoons olive oil or avocado oil
  • 1/2 teaspoon sea salt
  • 1/4 teaspoon ground black pepper
  • Your choice of ketchup or dipping sauce (optional)


  1. Preheat your oven to 400°F. Line a baking sheet with parchment paper and set aside.
  2. Use a sharp knife to carefully cut the sweet potatoes into fry shapes about 3/4-inch in width. Try to cut the fries similarly in width so they cook evenly.
  3. Place the sweet potato fries in a large mixing bowl. Toss with the oil, salt and pepper.
  4. Transfer the fries to the baking sheet and spread them out so they are in a single layer.
  5. Bake for 15 minutes. Remove the baking sheet from the oven and use tongs to turn the fries over. Bake for an additional 15-20 minutes, or until the fries start to turn a golden brown. Be careful not to let them burn.
  6. Remove the baking sheet from the oven. Let the fries cool for a few minutes before serving.


  1. You can cut this recipe in half to make one serving. You can also double the recipe, but you may need to bake the fries on two baking sheets.
  2. Store any leftover fries in an airtight container in the refrigerator for up to 4 days. Reheat before serving.
  3. These fries can also be made in the air fryer. But, you will likely only have room in your air fryer basket for one potato’s worth of fries at a time. Bake them at 400°F for 20 minutes, flipping or tossing them once during the cooking process.
  4. Look for Japanese Sweet Potatoes at specialty markets. They are different than regular purple sweet potatoes.


  • Serving Size:
  • Calories: 233
  • Sugar: 5.4 g
  • Sodium: 652.9 mg
  • Fat: 14.1 g
  • Saturated Fat: 2 g
  • Carbohydrates: 26.3 g
  • Fiber: 4 g
  • Protein: 2.1 g
  • Cholesterol: 0 mg

Keywords: japenese sweet potatoes, oven baked fries, air fryer fries