Go Back

Sweet Potato Oven Fries - Crispy, Comforting, and Simple

Print Recipe Pin Recipe
Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 4 servings
Ingredients Method

Ingredients
  

  • 2 large sweet potatoes (about 2 pounds), scrubbed and peeled if you prefer
  • 2 tablespoons cornstarch (or arrowroot powder)
  • 2–3 tablespoons olive oil (or avocado oil)
  • 1 teaspoon kosher salt
  • 1/2 teaspoon black pepper
  • 1 teaspoon smoked paprika (optional, for a smoky kick)
  • 1/2 teaspoon garlic powder (optional)
  • Pinch of cayenne (optional, for heat)
  • Fresh herbs like parsley or cilantro, chopped (optional, for garnish)
  • Dipping sauces like ketchup, chipotle mayo, or garlic yogurt sauce (optional)

Method
 

  1. Preheat the oven: Set your oven to 425°F (220°C). Place two large sheet pans inside to heat up. A hot pan helps the fries sear and crisp quickly.
  2. Prep the potatoes: Cut sweet potatoes into sticks about 1/2 inch thick. Try to keep the size consistent so they cook evenly. Thicker fries take longer but crisp better.
  3. Optional rinse and dry: For extra crispiness, soak the cut fries in cold water for 20–30 minutes to pull out some starch. Drain and dry thoroughly with a clean towel. Dry fries are key—any moisture leads to steaming.
  4. Coat with cornstarch: In a large bowl, sprinkle cornstarch over the fries and toss until they have a light, even dusting. This step helps create a golden crust.
  5. Add oil and season: Drizzle with oil and toss again. Add salt, pepper, and any optional spices. Toss until every piece looks glossy and well-seasoned.
  6. Spread on hot pans: Carefully remove the hot sheet pans. Line with parchment if you like, then spread the fries in a single layer with space between each piece. Do not crowd the pan.
  7. Roast and flip: Roast for 15 minutes, then flip the fries. Rotate the pans if using two racks. Roast another 10–15 minutes, until the edges are browned and the centers are tender.
  8. Finish and serve: Taste and adjust salt. Add a sprinkle of fresh herbs if you like. Serve hot with your favorite dipping sauce.