Crispy Baked Sweet Potato Fries
The oven method that finally makes sweet potato fries crispy instead of soggy. A healthier side or snack with a simple yogurt dip.
Sweet potato fries are delicious, but baking them until crispy can be frustrating. Sweet potatoes contain more sugar and moisture than regular potatoes, so they tend to go soft in the oven.
Three simple steps solve the problem. Cut them thin and even, toss them in a light coating of cornstarch, and give them plenty of space on a hot pan. The result is a crispy outside and a creamy inside, with far less oil than deep frying.
At a glance: this crispy baked sweet potato fries serves 4, needs about 10 min of hands-on prep and 30 min of cooking, and provides roughly 180 calories and 2 g of protein per serving. It is naturally vegan, gluten-free and dairy-free.
Why you'll love this recipe
- Crispy without deep frying
- Uses only a tablespoon or two of oil
- Naturally gluten-free and vegan
- Great side for burgers and sandwiches
About this sweet potato fries recipe
Sweet potato fries have become a popular alternative to classic French fries, prized for their natural sweetness, bright orange color and slightly creamy interior. Restaurants usually deep-fry them, but baking at home uses a fraction of the oil.
The challenge is that sweet potatoes contain more sugar and moisture than regular potatoes, so they tend to go soft in the oven. This recipe solves the problem with three simple steps. Cut thin, even sticks, toss them in a light coating of cornstarch, and spread them out on two hot baking sheets so they roast instead of steam.
Seasoned with smoked paprika and garlic and salted right out of the oven, they make a delicious side for burgers and sandwiches or a snack with a creamy dip.
Ingredient notes and substitutions
- Sweet potatoes. Choose medium sweet potatoes with smooth skin. Leave the skin on for extra fiber and crunch, or peel them for a more classic look.
- Cornstarch. A thin coating absorbs moisture and creates a crisp crust. Arrowroot works too.
- Oil. Avocado oil handles high heat well. Olive oil also works.
- Smoked paprika. It adds a smoky flavor and deepens the color.
- Salt. Salt the fries after baking; salting before draws out moisture.
- Dipping sauce. A quick Greek yogurt sauce with lime and sriracha is lighter than mayonnaise-based dips.
Equipment you'll need
- Two large baking sheets
- Parchment paper
- A sharp chef's knife
- A large bowl for tossing
How to make it, step by step
Cut even sticks
Cut the sweet potatoes into sticks about 1/4 inch (6 mm) thick. Even pieces cook at the same rate, so you avoid burnt thin fries and soft thick ones.
Coat with cornstarch first
Toss the fries with cornstarch until lightly dusted, then add oil and spices. Coating them in this order prevents clumps.
Give them space
Spread the fries on two lined baking sheets, leaving space between them. Crowded fries steam and turn soggy.
Bake and flip
Bake for 15 minutes, flip, then bake for another 10 to 15 minutes until crisp and browned at the edges.
Salt and rest
Sprinkle with salt as soon as they come out of the oven and let them rest on the pan for five minutes; they crisp further as they cool.
Recipe
Crispy Baked Sweet Potato Fries
American · Snacks · Vegan · Gluten-Free · Dairy-Free
Ingredients
- 2 large sweet potatoes (about 1 1/2 lb / 680 g)
- 1 tablespoon cornstarch
- 1 1/2 tablespoons avocado oil or olive oil
- 1/2 teaspoon smoked paprika
- 1/2 teaspoon garlic powder
- 3/4 teaspoon salt, added after baking
- Yogurt dip: 1/2 cup Greek yogurt or dairy-free yogurt, 1 teaspoon lime juice, 1 teaspoon sriracha, pinch of salt
Instructions
- Prepare. Preheat the oven to 425°F (220°C) and line two large baking sheets with parchment.
- Cut the fries. Peel the sweet potatoes, or leave the skins on for extra fiber. Cut them into sticks about 1/4 inch (6 mm) thick.
- Coat. Toss the fries with the cornstarch until lightly coated, then add the oil, paprika and garlic powder and toss again.
- Bake. Spread the fries in a single layer with space between them. Bake for 15 minutes, flip, then bake for 10 to 15 minutes more, until crisp and browned at the edges.
- Season and serve. Sprinkle with salt immediately and let them rest on the pan for 5 minutes. Serve with the yogurt dip.
Nutrition (estimated, per serving)
Nutrition values are estimates calculated from typical ingredient data and will vary with the exact products and quantities you use.
Tips for success
- Cut the fries as evenly as possible so they cook at the same rate.
- Salt after baking; salting before draws out moisture.
- Use two pans. Crowded fries steam and turn soggy.
Troubleshooting
- The fries are soggy. Use two pans, a hot oven and thinner sticks.
- The fries burn. Cut them more evenly and check them a few minutes early.
- The fries stick to the pan. Use parchment paper and flip them carefully.
- The fries are bland. Season generously right after baking.
Variations
- Air fryer. Cook in batches at 400°F (200°C) for 12 to 15 minutes, shaking halfway.
- Cajun. Add 1 teaspoon Cajun seasoning instead of paprika.
- Sweet. Toss with cinnamon and a pinch of salt after baking.
What to serve with it
Serve the fries with turkey burgers, black bean burgers, grilled chicken or a sandwich. A yogurt dip, guacamole or ketchup makes them a great snack.
For a sweet version, toss them with cinnamon and a pinch of salt and serve them with Greek yogurt.
Make ahead and storage
Cut the sweet potatoes up to a day ahead and store them in cold water in the fridge. Dry them very well before coating. Leftover fries can be re-crisped in the oven or air fryer.
Fries are best served fresh. Leftovers keep in the fridge for up to 3 days; reheat in the oven or air fryer, not the microwave.
Is it healthy?
Sweet potatoes are rich in fiber, potassium and beta-carotene. Baking them with a small amount of oil makes these fries much lighter than deep-fried versions.
Leaving the skin on adds extra fiber.
Nutrition information is an estimate for general guidance only and is not medical or dietary advice.
Frequently asked questions
Why are my baked sweet potato fries soggy?
The most common reasons are crowded pans, fries cut too thick, or a low oven temperature. Use high heat and plenty of space.
Should I soak sweet potatoes before baking?
It is not necessary. Soaking helps regular potatoes, but for sweet potatoes the cornstarch coating does more for crispiness.
Are baked sweet potato fries healthy?
Compared with deep-fried fries, they use much less oil. Sweet potatoes also provide fiber, vitamin A and potassium.
Can I make sweet potato fries in the air fryer?
Yes. Air fry at 400°F (200°C) for 12 to 15 minutes, shaking halfway.
Should I soak sweet potatoes?
It is not necessary. The cornstarch coating does more for crispness.
Can I freeze baked sweet potato fries?
Yes. Freeze them on a tray, then bake from frozen.
Are sweet potato fries healthier than regular fries?
Baked sweet potato fries provide more vitamin A and similar fiber. The cooking method matters more than the potato.
What dip goes with sweet potato fries?
Chipotle yogurt, garlic aioli, guacamole or honey mustard.
Do I need to peel sweet potatoes?
No. The skin adds fiber and texture.
Can I make them spicy?
Add cayenne or chili powder.
How do I cut sweet potatoes safely?
Cut a thin slice off one side to create a flat base, then slice.
Can I use olive oil?
Yes.
How many calories are in a serving?
About 180 calories per serving.
Can kids eat these fries?
Yes. Most children love their sweet flavor.
Why salt after baking?
Salt draws out moisture, which can make fries soggy if added before.
Can I bake them on foil?
Parchment works better; fries can stick to foil.
What temperature is best?
425°F (220°C).
Can I make waffle fries?
Yes, with a crinkle cutter. Bake a little longer.
How do I reheat sweet potato fries so they stay crispy?
Spread them on a baking sheet and reheat at 425°F (220°C) for 5 to 8 minutes, or air fry for 3 to 4 minutes. Avoid the microwave, which makes them soft.
Can I add parmesan or herbs?
Yes. Toss the hot fries with a little grated Parmesan, chopped parsley or rosemary right after baking.
Final thoughts
This crispy baked sweet potato fries takes about 40 min from start to finish and serves 4. It is vegan, gluten-free and dairy-free, and it is easy to adapt with the variations above. If you make it, adjust the seasoning to your taste and make a note of what you changed, so the next batch is exactly how you like it. Looking for more ideas? Browse all our snacks recipes or the full recipe index.