Crispy Sweet Potato Fries Recipe (Deep Fried)

Sweet potato fries, when done right, are INCREDIBLE. Two favorites that come to mind that I’ve eaten a lot are the sweet potato fries at Veggie Grill and Native Foods. These fries are well-seasoned with a light and crisp outer layer, with a fluffy and almost creamy center.

I’m so excited (after failing so many times) to have a method that results in delicious homemade sweet potato fries. At first, I wanted to try the healthy way and bake them, but couldn’t get them crispy for the life of me–they just end up burning and getting leathery before ever crisping.

crispy sweet potato fries

Not sure if or how other people are getting baked recipes to be crispy. I simply don’t believe it at this point. Frying is the only way I’ve gotten it to crisp, and the results are excellent!

Let’s get started on excellent sweet potato fry-dom:

1. Clean & cut into matchsticks

You can peel the skins if you want, but it won’t affect the crispness in this recipe. I like to leave them on since they’re healthy for you! Sweet potato skins contain fiber and other nutrients.

peel and cut

If you want sweet potato fries with more ‘creamy’ center, go for 1/2″ fries. If you want more fried-to-potato ratio, then go with 1/4″ fries.

Keep the cut as uniform as you can so each piece finishes cooking at the same time. Using a mandolin for this is near impossible and can be very dangerous unless you’re the Hulk. I just used a regular chef’s knife and went at it by hand.

Another other option for high volume cutting would be those wall or table-mounted, lever-action cutters that you see at places like In-N-Out such as this cutter.

cut into matchsticks

2. Rinse to remove excess starch

You do not need to soak them! Just run them under water and swish it around. Dump the water, and repeat one more time.

I tried soaking these sweet potato matchsticks for an hour after the 2nd rinse and it does not release any extra starch.

3. Boil to Par-cook

2 par cooking methods

I boil to par-cook sweet potato fries for 1/2″ fries only because they are much larger and would not have enough time to cook all the way through the center when you’re frying. 1/4″ fries don’t need par-cooking.

Without par-cooking, the outside of the fry burns before the center is fully cooked. I like to boil them because it’s faster than baking, and more importantly, the sweet potatoes retain their rich color.

1. Add water and potatoes to a pot and bring to a boil.
2. When it hits a boil, reduce to 50% heat and check for doneness every few minutes. It’s done when pliable and slightly fork tender, but not mushy.

4. Batter & Fry

Cornstarch batter

making the cornstarch batter

For a small-medium sweet potato, use a light cornstarch batter of 1 tbsp starch to 1 tbsp water and increase in even amounts as needed. This sludges up quickly between dipping, so mix it up each time before dipping. Do this in small handfuls at a time and drop them right into the fryer.

This is a good stage to add some salt too if you’d like. Make sure to use the fine granulated salt so it dissolves more evenly.

Managing oil temperature

fry 'em up!

Fry at 325-350 °F or on medium heat for 1-2 minutes until crisp. A deep fry thermometer would be perfect for this if you have one. Most of the cooking should have been completed already during the par-boiling, so at this stage, we’re really just trying to cook that outer batter layer and reheat the fries.

I use a more versatile probe thermometer, which is one of my favorite kitchen tools. You can also use a candy thermometer clipped to the side of the pot so it’s more out of the way, but those types of analog thermomters tend to respond to temperature changes a bit more slowly.

Season with salt while it’s hot, then serve with some chipotle or garlic aioli!

super crispy sweet potato fries

Why are my sweet potato fries soggy?

I like to make extra steps to get the crispiest sweet potato fries. After cleaning the sweet potatoes under running water, I make sure they dry properly before covering them in a cornstarch batter.

The drier they are, the more the batter will stick to the sweet potatoes. The batter itself will give you an extra crunchy outer layer. I also double fry the potatoes to make the crunch better and last longer.

How do you make sweet potato fries from scratch?

All you need to make sweet potato fries from scratch is sweet potatoes, cornstarch, water, and oil for frying. It’s as simple as that, but if you want to get extra crispy potatoes, follow my techniques below.

Are sweet potato french fries healthy? Are they healthier than regular potato fries?

Yes and no, sweet potatoes are seen healthier than regular potatoes because they have beta-carotene and fiber in them. But keep in mind you are still deep frying these bad boys.

I’m all for indulging in fries, but I would also keep in mind moderation is the best method to follow if you have dietary restrictions.

Can you eat sweet potato skin?

You can definitely leave the sweet potato skins on because they are edible.

No Fail Sweet Potato Fries Pinterest Image

Fried Crispy Sweet Potato Fries Recipe

4.94 from 16 votes
This recipe took me so many tries to nail down–let me share! These deep fried sweet potato fries have an amazing crunch while retaining the fluffy sweet potato centers you will love.
BY: Huy Vu
Prep: 30 minutes
Cook: 35 minutes
Total: 1 hour 5 minutes


  • 2 sweet potatoes medium size
  • 5 tbsp cornstarch
  • filtered water
  • neutral cooking oil peanut, vegetable, or canola


  • paprika
  • freshly ground black pepper
  • kosher salt


Prep & Par-cooking

  • Wash, peel (optional), and cut into 1/2″ or 1/4″ matchstick shape fries. 1/2″ (preferred) will require par-cooking.
  • Rinse under running water, drain and repeat once more. Dry in salad spinner or with towels.
  • To par-cook: boil in water until tender, and just cooked all the way through, not mushy and breaking in our hands. About 8-15 minutes.


  • Make some batter. About 4 parts cornstarch to 3 or 4 parts water until milky, but not too watery.
  • Dip fries (I do about 5 so they don’t sit there as the cornstarch gunks up). Shake off excess.
  • Quickly drop into the fryer 1 at a time so they don't stick. About 1-2 minutes at 325-350 °F. We don't want it to brown too much yet.
  • Remove from oil, rest on paper towels to remove oil and cool off.
  • Repeat to finish all the fries, making sure you mix up the batter before each small batch (For me, each set of 5 fries). You might have to add some water if the batter is sludgy.
  • So after the first batch, they’re pretty good now, but you have to eat them quickly or they lose the crunch. I have discovered that a 2nd dip & fry makes the crunch better and last much longer.
  • Dip + fry a 2nd time, following the same steps. Except this time you can leave them in the oil until the fries brown enough to your liking. It still should be around 1-2 minutes. Season each batch while hot. I like salt, paprika, and finely (freshly) ground pepper.
Nutrition Facts
Fried Crispy Sweet Potato Fries Recipe
Serving Size
0 g
Amount per Serving
% Daily Value*
Saturated Fat
Vitamin A
Vitamin C
* Percent Daily Values are based on a 2000 calorie diet.
Course: Appetizer, Snack
Cuisine: American
Keyword: deep fried
Did you cook this recipe?Tag @HungryHuy or #hungryhuy–I’d love to see it!

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24 comments on “Crispy Sweet Potato Fries Recipe (Deep Fried)

  1. Kiersten @ Oh My Veggies says:

    Oh man, my sweet potato fries never turn out like that–these look perfect!

    1. Huy says:

      Thanks Kiersten–I had a ton of failed batches before being able to make these. At least most of the failed ones tasted good, even if not crispy.

  2. Hieu says:

    This looks delicious! And a lot of work 🙂

    1. Huy says:

      Yep and…kind of. It’s not as easy as drive-thru, but this recipe will set you straight!

      1. Kain Smalling says:

        Hell to the yes

  3. Kain Smalling says:

    5 stars
    Oh damn, these r de most fanstaaaaaastical ting i have ever had the pleasure of eating. They have truly changed my life. I even love the foam like substance on them. Its so nice.

    1. Huy says:

      Life-changing foods are hard to come by…I’m so happy you liked it and thanks for sharing 🙂

  4. Ella says:

    5 stars
    Have searched high and low for the perfect recipe to make the fries go crispy and bingo! Thank you A BUNCH!!

    1. Huy says:

      Hey Ella, I’m glad you liked the recipe! I’m due for another batch of these.

  5. Debbie says:

    5 stars
    I just made these to go with some chicken burgers and WOW they did not disappoint! They were just perfect — flavorful and crispy. Thank you for a great recipe!

    1. Huy says:

      Awesome Debbie, thanks for sharing!

  6. Lizzy says:

    5 stars
    You. Are. My. Hero. Currently in heaven while I eat these.

    1. Huy says:

      Lizzy, I’m so happy to hear you enjoyed the fries–thank you for sharing! 🙂

  7. stephensteeves says:

    Anyone know a recipe 4 using a deep fryer? Temp and time.

  8. Maya says:

    No cornstarch. 🙁 is there an alternative? Flour or baking powder?

    1. Huy says:

      Hey Maya, I haven’t tried so I am not able to say, sorry!

    2. Jennifer McGrath says:

      4 stars
      I used flour and it worked just fine.

  9. Mr.Tim says:

    5 stars
    Wow! I just made these and they are fantastic even 20 minutes later they are still crunchy outside and butter-like inside.

  10. ufy says:

    Do i have to batter them?

  11. JoAnne Ruether says:

    Can I skip floor and cornstarch?

    1. Hungry Huy says:

      If you skip the cornstarch it will not be crispy!

  12. shallum says:

    5 stars
    This recipe was really good but I had to make a few changes. Instead of parboiling I put it in the microwave for few minutes. I used potato starch cos that’s what I had and instead of making a slurry I added the starch to the damp potatoes from the microwave. It came out crunchy on outside and squishy on inside and didn’t go limpy. Thanx hungryhuy

  13. Gwen says:

    5 stars
    Taste pretty good🎉👍

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