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–+ servings

Crispy Sweet Potato Fries

These oven-baked sweet potato fries come out crisp on the outside and tender inside. The key is drying the potatoes well, coating lightly with cornstarch, and roasting at high heat without crowding the pan.
Amanda
Prep Time 15 minutes
Cook Time 30 minutes
Total Time 45 minutes
Serving Size 4 servings

Equipment

  • sharp knife
  • cutting board
  • Large mixing bowl
  • Rimmed baking sheet
  • Parchment paper or silicone mat
  • Measuring spoons
  • Kitchen towel or paper towels
  • Spatula or tongs (for flipping)

Ingredients

  • 2 large sweet potatoes about 1.5–2 lb total, scrubbed
  • 2 tbsp olive oil or avocado oil
  • 1 tbsp cornstarch
  • 1 tsp garlic powder
  • 1 tsp paprika
  • 1/2 tsp salt plus more to taste after baking (optional)
  • 1/4 tsp black pepper
  • 1/4 tsp cayenne pepper optional, for heat

Instructions

  • Preheat the oven to 425°F (220°C). Line a large rimmed baking sheet with parchment paper (or lightly oil the pan).
  • Wash and scrub the sweet potatoes. Cut into evenly sized sticks about 1/4-inch thick for even cooking.
  • Thoroughly pat the cut fries dry with a kitchen towel or paper towels (this helps them crisp up).
  • Add the fries to a large bowl and toss with the olive oil until lightly coated. Sprinkle in the cornstarch and toss again until no dry patches remain.
  • Add the garlic powder, paprika, salt, black pepper, and optional cayenne. Toss until the fries are evenly seasoned.
  • Spread the fries in a single layer on the prepared baking sheet, leaving space between pieces. Don’t crowd the pan—use two sheets if needed.
  • Bake for 15 minutes, then flip the fries. Bake 10–15 minutes more, until golden-brown and crisp at the edges (timing varies by oven and fry thickness).
  • Serve immediately for the best crispiness. Taste and add a pinch more salt if desired.

Notes

Storage: Refrigerate leftovers in an airtight container for up to 3 days.
Reheat: For best texture, reheat on a baking sheet at 400°F for 5–7 minutes, or in an air fryer at 375°F for 3–4 minutes. Avoid the microwave (they’ll turn soggy).
Extra-crispy tips: Dry the fries well, coat with cornstarch, and leave space on the baking sheet so they roast instead of steam.

Nutrition

Calories: 240kcal | Protein: 3g | Saturated Fat: 1g | Sodium: 290mg