Baked Sweet Potato Fries with Crispy Potato Starch Coating
By Isabella Quinn
High oven heat dries the coated surfaces while letting the sweet potatoes’ sugars brown lightly, so these baked sweet potato fries develop crisp edges without deep frying. The result is a savory-sweet side dish or snack with a seasoned potato-starch crust.
The fries are peeled and cut into short, even pieces before being tossed with potato starch, kosher salt, black pepper, garlic powder, and paprika. Potato starch is the key coating: it seasons the fries while absorbing extra surface moisture. Olive oil helps prevent sticking and encourages the outer crust to form on the hot, foil-lined baking sheet.
A single layer with space between every fry is the visual setup to aim for, because crowded pieces trap moisture instead of drying. After the first 15 minutes, the undersides should be firm enough to flip carefully with a spatula. Continue baking until the fries are lightly browned and crisp; skipping the coating or piling them together produces softer surfaces.
Serve the fries hot from the oven, when their crisp coating is at its best. Ranch sauce, ketchup, and homemade mayonnaise are suggested dipping options. Once completely cooled, they will not stay as crisp, so plan to bring them to the table promptly.
Why you'll love this recipe
- Potato starch absorbs extra surface moisture as it seasons the fries, creating a noticeably crisper outer coating than uncoated sweet potato pieces.
- Preheating the foil-lined baking sheet starts drying the fries immediately, helping the olive-oil-coated surfaces form a crust instead of sticking.
- Short, 3-to-4-inch cuts hold their shape better than longer fries and expose more edges to heat for a firmer texture.
- Baking at 400°F dries the exterior efficiently while allowing the sweet potatoes’ natural sugars to brown lightly without scorching quickly.
- Flipping after 15 minutes gives both cut sides direct contact with the hot pan, producing more even browning and crispness.
- The seasoning blend combines salt, pepper, garlic powder, and paprika in the coating, so flavor is distributed across every fry rather than added afterward.
Ingredients
- •1.25 lb sweet potatoes
- •2 tbsp potato starch
- •0.5 tsp kosher salt
- •0.25 tsp black pepper
- •0.25 tsp garlic powder
- •0.25 tsp paprika
- •3 tbsp olive oil
Instructions
- 1
Set the oven rack to the middle position. Preheat the oven to 400°F (204°C). Line a baking sheet with foil and place it in the oven to heat before roasting the potatoes.
- 2
Peel the sweet potatoes and cut them into 3/8-inch-thick, 3-to-4-inch-long pieces. Place them in a large bowl.
- 3
In a small bowl, whisk together the potato starch, kosher salt, black pepper, garlic powder, and paprika.
- 4
Add the spice mixture to the sweet potatoes and toss to mix. Drizzle with olive oil and mix to coat evenly.
- 5
Carefully remove the hot baking sheet from the oven. Evenly space the sweet potato fries on the pan so they do not touch.
- 6
Bake for 15 minutes. Carefully flip the fries with a spatula, then bake until lightly browned and crisp, about 10 to 15 minutes more.
- 7
Serve the sweet potato fries hot from the oven.
FAQ
Nutrition (per serving)
Calories
230
Protein
2g
Fat
10g
Carbs
33g
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