Do you want to make sweet potato fries in the oven? These crispy sweet potato fries require very little oil to brown in the oven. Our secret? We use a little cornstarch to get a perfectly crunchy fry.
Most people don’t become interested in healthy eating overnight; at least, we didn’t. It took a few “gateway” foods to get us interested, one of which was the sweet potato. A few meals of loaded sweet potatoes and we were hooked, not only on the potato itself, but the concept that healthy eating could be vibrant and delicious.
And what’s a more satisfying in a gateway food than fries? We’ve been searching for a no-fail crispy sweet potato fries recipe for year. We gave up after several failed attempts where the fries turned into a pile of mush in the oven (have you been there, too?). But we finally found the trick. Here’s what to do to get the perfect crispy sweet potato fries!
The trick to perfect sweet potato fries
Finally: a sweet potato fries recipe that’s slightly crispy on the outside, perfectly seasoned, and lusciously sweet on the inside! But a word of warning: don’t expect these to be crispy like standard fries; the moisture content in sweet potatoes makes it almost impossible to crisp up in the oven (unless they’re burned—been there too!).
The trick? Add a light coating of cornstarch to the potatoes while baking! This method helps most of the fries to become slightly crispy on the outside: though you will find stragglers that are soft. They’re best fresh from the oven; sitting time afterwards allows them to become mushy.
Video: How to cut potatoes into fries
Wondering exactly how to cut potatoes into fries? Here’s our quick tutorial showing me cutting fries in our kitchen!
How to make crispy sweet potato fries: some tips!
Here are a more notes and tricks on how to make crispy sweet potato fries:
- Coat with cornstarch. As noted above, the trick to making truly crispy oven-baked sweet potato fries is using cornstarch to give the fries a slightly crunchy exterior.
- Keep as far apart on the baking sheet as possible. You’ll also need to bake these sweet potato fries at a high temperature and keep them from touching each other as much as possible while cooking.
- Sweet potatoes will not crisp up as much as standard potatoes. The sweet potato has much more moisture than a russet potato. However, it is possible to get relatively crispy exterior with this method.
- Fries become soft as they sit: so serve right away! Because the fries become soft as they sit, they are best served warm from the oven. If you like dipping your fries in something, might we recommend this homemade honey mustard? The combination of sweet potatoes and tangy honey mustard is hard to beat!
Once you’ve adjusted your expectations to the baked sweet potato fry, you’ll find they’re addicting-ly delicious: an ideal gateway into the world of whole food eating.
Do you have a favorite sweet potato fry method? Let us know!
More sweet potato recipes
- Loaded Sweet Potato Rounds
- Loaded Sweet Potato Skins with Kale
- Broccoli Cheese Stuffed Sweet Potatoes
- Moroccan Chickpea and Sweet Potato Stew
- Shaved Brussels Sprout and Sweet Potato Salad
- Sweet Potato and Black Bean Enchiladas
- Sweet Potato and Red Onion Galette
- Sweet Potato, Black Bean and Green Chile Enchiladas
This crispy sweet potato fries recipe is…
Vegan, dairy free, plant based, vegetarian, and gluten-free.Print
These crispy sweet potato fries require very little oil to brown in the oven. Our secret? We use a little cornstarch to get a perfectly crunchy fry.
- 2 pounds sweet potatoes
- 2 tablespoons olive oil
- 1 teaspoon garlic powder
- 1 teaspoon kosher salt
- 2 teaspoons chili powder
- 2 1/2 tablespoons cornstarch
- Preheat the oven to 425°F.
- Cut the potatoes into fries (watch the video below): Wash the sweet potatoes, leaving on the skin. Slice off the ends of each potato, then slice the potato in half lengthwise. Place the potato half cut side down and cut off a 1/4-inch slice, then lay the slice on its side and cut it into several long strips. Repeat until all potatoes have been cut into fries. The pieces can be uneven, but aim for as uniform of thickness as possible. See the video below!
- Place the fries in a large bowl; drizzle with the olive oil, then add the garlic powder, kosher salt (less if using table salt), chili powder, and cornstarch. Mix thoroughly to combine.
- Line two baking sheets with parchment paper. Spread the fries on the paper, placing them as far apart as possible.
- Bake 15 minutes on one side, then flip the fries and bake 10 to 15 additional minutes until the fries are dry and slightly browned; watch them carefully as the cooking time can depend on the thickness and the heat of your oven. (If the majority of the fries seem soft, continue to cook.)
- Cool for about 5 minutes, then serve immediately. Some fries may be slightly soft, but the outside of the majority of the fries will be crispy. (Note: Fries are best right out of the oven; they become softer as they sit.)
- Category: Side Dish
- Method: Baked
- Cuisine: American
Keywords: crispy sweet potato fries, sweet potato fries, baked sweet potato fries
Looking for more healthy side dish recipes?
Outside of these crispy sweet potato fries, here are a few more side dish recipes on A Couple Cooks:
- Incredible No Mayo Potato Salad
- Perfectly Creamy Polenta Recipe
- Seasoned Baked Potato Wedges
- Grilled Romaine Lettuce
- Smashed Potatoes with White Balsamic Reduction
- Strawberry Salad with Balsamic Vinaigrette
- Shaved Brussels Sprouts Salad with Pomegranate
- Parmesan Potatoes
- Best Popovers Recipe
- Apple Manchego Salad
- Greek Salad
- Cucumber Salad with Vinegar
- Classic Vegan Potato Salad
- Peach & Burrata Caprese Salad
- Arugula & Tomato Burrata Salad
Last updated: August 2020
About the Authors
Sonja Overhiser is author of Pretty Simple Cooking, named one of the best healthy cookbooks of 2018. She’s host of the food podcast Small Bites and founder of the food blog A Couple Cooks. Featured from the TODAY Show to Bon Appetit, Sonja seeks to inspire adventurous eating to make the world a better place one bite at a time.
Alex Overhiser is an acclaimed food photographer and author based in Indianapolis. He’s host of the food podcast Small Bites and founder of the recipe website A Couple Cooks. Featured from the TODAY Show to Bon Appetit, Alex is author of Pretty Simple Cooking, named one of the best vegetarian cookbooks by Epicurious.