Perfect Oven Sweet Potato Fries by jessyratfink
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I have perfected the art of the sweet potato fry. I've made them so many times that I have a very set formula for making them. I don't enjoy frying things, so I do mine in the oven. They're easy and tasty and go well with Cuban, Mexican and Indian food. :D

They're also good for holiday dinners. I just can't get on the "let's dump half a bag of brown sugar and some marshmallows into a pan with some sweet potatoes and maple syrup!" bandwagon. Sweet potatoes are sweet enough as is!

Step 1: Supplies!

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You will need:
  • one large sweet potato
  • sea salt (coarse)
  • freshly ground black pepper, chunky
  • good quality olive oil
  • a peeler (optional)
  • a sharp chef's knife
  • a cutting board
  • a large baking sheet (not pictured)
This recipe takes about a half hour to make, and one large sweet potato can serve 2-3 people if it's a side. Or sometimes I'll eat a whole one by myself if I've had nothing else to eat that day.

Step 2: Preheat the oven and prep the sweet potato!

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Set the oven to 450 degrees Fahrenheit.

You can either peel the potato or leave the skin on - lately I leave it on every time. It adds nutrition and a nice chewy texture. :D

I don't worry about washing it, normally, but you can rinse it in the sink as long as you promise me you'll dry it off very, very well. If it's still wet the olive oil won't coat the fries as well, which will lead to soggy fries. And then you'll be disappointed with the fries and I'll be disappointed with you. :(

If your sweet potato has skinny ends, cut those off.

Step 3: Slice the sweet potato!

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Most times, I will cut the sweet potato in half because they're normally very large.

Now, take a half of the sweet potato and cut it into large slices about 3/4 inch thick. You'll then cut the larger slices into fries. Your fries should be 1/2 inch to 3/4 inch thick.

Repeat this for the other half!

Sorry for the lack of action shots, I was doing this all by myself. :P

Step 4: Put the fries on the baking sheet!

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Just throw them all on there.

Sprinkle a good pinch of sea salt over them, and then apply a ton of freshly ground black pepper. I like to keep mine more chunky because it gives them a nice bite. :D

Drizzle with olive oil (Probably about 1/8 cup, I don't know, I just eyeball things.)

Now, mix it all together on the baking sheet. Make sure you're scooping the salt, pepper and oil from the bottom and mixing it in. Don't let the tastiness go to waste!

At this point you can add more olive oil if you want - just don't drown them. They should look glossy, but they shouldn't be sitting in a pool of olive oil.

Once everything's mixed, space out the fries on the baking sheet. Make sure they're all evenly spaced and not touching. They'll get soggy otherwise!

Step 5: Baking!

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Put them in the oven for 15 minutes. Do not open the oven or fidget with them during this time. Just let 'em cook. The smell will probably be too much to bear, so perhaps this is a good time to go to another room and focus on something else. :D

Then, take them out and flip them. I use my bare hands most of the time, but tongs work well too. (The first photo is after the first 15 minutes)

Once they're flipped, put them back in the oven for 10 minutes. :)

Both sides should now be dark brown and crispy and delicious. And hopefully spicy, if you followed my directions. Spicy is the way to go with sweet potato fries!

Keep in mind that I like mine REALLY dark and crispy. Should you want a lighter brown color, just reduce the cooking time a couple minutes for both sides.

Enjoy! :D

Additional cooking tips:
  • these will not turn out very crispy at all if you're cooking anything else in the oven, or if the fries are crowded too close together. They'll sweat instead of crisp!
  • keep an eye on them because ovens are tricksy little things. You don't want them to get black.
  • also, a lighter colored baking sheet is preferable - mine are very dark and I've started to have to cut my cooking time a lot to avoid getting them too dark.
  • Feel free to cut them smaller and cook them for less time - 10 minutes for the first side and 8 for the second works well for thinner fries.
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dconing says: May 17, 2013. 8:58 AM
This is the first time I've ever eaten sweet potatoes (yes, I'm a "northerner"). Thanks for the recipe. The fries did come out black on the sides touching the pan. I used aluminum foil and cooked the 15 & 10 minutes, do you think the foil was the problem? (Perhaps the pan was too close to the heating element?) Also, I used garlic pepper spice which was tastee...
farticus says: May 16, 2013. 7:14 PM
We preheat the potato in the microwave while the convection oven is preheating to get a super crunchy surface and a soft well cooked inside.
tnorm5828 says: May 16, 2013. 3:46 PM
I've been doing these a similar way though I've opted normally for just regular vegetable or canola oil. And I agree... spicy is the right way to go. I add a bit of sugar (and sometimes cinnamon) to just give it a bit more sweet taste too.
Denon says: May 12, 2013. 7:32 AM
Sometimes I use left over packet seasoning like fajita mix or so juicy spice mix or smoked paprika, I bung them in a bag, add the oil, toss around then add the seasoning.
slytface says: Apr 19, 2013. 4:58 PM
awesome! I had some yams and I used them with this recipe. HMMM HMMM good.
Noir Moon says: Apr 17, 2013. 8:12 PM
These sound delicious and will have them tomorrow for dinner. :) And hanks for the enjoyable tutorial!
adesai7 says: Mar 29, 2013. 4:58 AM
great recipe
HollyMann says: Mar 20, 2013. 8:08 AM
Your food instructables are killing me...they look SOOO good!! My oven is broken right now and I really want to make these!!!
handprints says: Mar 18, 2013. 9:19 AM
I am going to do this today! you make it sound so easy!!!! I hope I don't cut myself. I am not good with sharp objects. :)
SonikJ says: Mar 17, 2013. 4:04 PM
I like mine roasted with chorizo and onion for extra flavour
eoverton says: Feb 19, 2013. 8:39 PM
I've been looking for something to soak up my chipotle and garlic aioli sauces. Score!
flores8609 says: Feb 2, 2013. 2:15 PM
Wow, I was not confident, but decided to try the recipe anyway. Absolutely great and easy.
ccopp says: Jan 7, 2013. 5:03 AM
Yummo, simple to do and delishus...bravo!! And thanks. I tried sprinkling some garlic salt and cayenne pepper on mine....kinda worked
eyesee says: Dec 20, 2012. 6:07 AM
Watching the drool
violetvee says: Dec 5, 2012. 4:16 PM
These came out suberp--I didn't miss the "fried" part in the least. I must say, though, that I wish they'd come with a disclaimer for those with particularly sensitive smoke alarms! I live in a 3-unit house, and first the alarm in my apartment started going off, and then the one in the hallway outside my apartment started going off, so I was running like a madwoman between alarms trying to fan away the smoke. I didn't burn the fries, but I guess the high sugar content produces a lot of smoke when it comes into contact with the hot metal. I am pretty sure I now have 25% less hearing. But, 20 minutes later when I finally was able to disable both alarms and was sufficiently deaf, I was able to enjoy these wonderfully tasty fries with butter and some sacred basil honey given to me by a friend. I will set up a fan to blow smoke out the window next time!
doodlecraft says: Nov 23, 2012. 12:07 PM
Just made these! So delicious! Thanks for sharing your tried and true recipe...I only wish I had more! :)
suzycue says: Sep 29, 2012. 7:46 PM
Just made these to go along with our turkey burgers. Very Nice! No need for brown sugar! They are crispy and sweet without any sugar. Also, I did not have any sea salt. I just sprinkled a little regular salt and some pepper, and used about 1/4 cup of olive oil. But next time, I'll cut down on the olive oil! They really only need a bit of brush-on oil. I used one huge sweet potato for 2 people--more than enough! I left the skins on. They were very tasty and crisp, and probably a lot healthier than white potato french fries or mashed potatoes. No sauces or ketchup etc, necessary!!
Drinky says: Sep 22, 2012. 6:51 PM
Fun read and great instructions! I'm excited to be making these in just a few moments... Love your writing style; the "apply a ton of freshly ground black pepper" made me smile, then you mention how you eyeball things... which are both exactly how I cook, so it makes total sense!
sickaroll says: Aug 28, 2012. 11:43 AM
SWMBO told me to do some sweet potato chips (fries, but outside the US) to go with the steak she's bringing home, and I'm banging them in the oven now, hope you've got it spot on, can't wait!
Jayefuu says: Aug 13, 2012. 10:48 AM
Jessy, I've known about this Instructable for coming on 2 years now. Yet I've never tried it. Tonight's the night!

*turns oven on* I'll let you know how it goes.
ianharperuk says: Jul 27, 2012. 10:26 AM
sweet potato fries are quite new to us in the UK but when ever im in Canada or the US...i love them so im about to try this as i have had no luck frying them
veryken says: Jul 11, 2012. 6:59 AM
Wow I'm so glad this instructable floated to the top. I love sweet potato "fries" and also prefer the oven to the fryer. My mouth is watering already at this early hour!
slylee says: Jul 9, 2012. 2:21 PM
Being from the south, naturally i love sweet potato fries. they are so vastly superior to regular fries! Nice Ible ;)
garnishrecipes says: Jul 9, 2012. 8:37 AM
Hey Jessy, do you know if this method works with taro? We just had baked taro fries on vacation with chipotle mayo.

Also, this looks delicious.
jessyratfink (author) says: Jul 9, 2012. 9:05 AM
I love taro but I can't say I've ever cooked it like this!

I bet it would work, but you might need to do them for a little longer and flip them more often because they're so much more dense. :)
garnishrecipes says: Jul 9, 2012. 10:57 AM
Thanks Jessy!
Andrei_7 says: Jul 3, 2012. 4:36 AM
hmmm...very tasty in the picture... :) yamii yamii :)
0SubZero7 says: Jun 16, 2012. 5:39 AM
thought I would try making some for dinner before the wife gets home from work for tea, just to test them!!! One word for recipe - PERFECT one word for the finished product- YUMMY. Looks like the me and the wife will be having these with a nice fillet steak, fried onions, breakfast mushroom and tomatoes.
jessyratfink (author) says: Jun 16, 2012. 9:31 PM
aww, thank you!

And that dinner sounds fabulous! :D
rrkrose says: Apr 30, 2012. 9:05 PM
Those are beautiful. I love sweet potato fries so much and can't wait to try this recipe.
Kimberlee55 says: Apr 5, 2012. 1:01 PM
Making these right now! Thankyou for your step by step instructions. I only cut my finger once! :) Looking forward to the fruits of my labor.....thanks to you!
planetary says: Mar 29, 2012. 2:21 PM
Yummy! Crispy outside and mushy inside. Delish! Goes really well with leftover tzatziki sauce from last night. Thanks for great recipe!
Bot1398 says: Mar 25, 2012. 3:00 AM
Look At That ViEw cOuNT man!!!!! AmAzInG
Bicycleman says: Nov 22, 2008. 7:20 AM
I like using a ziploc bag for this step, espescially if I'm using many herbs or spices. Just mix the seasonnings in the bag, add oil, add potatoes, close and shake, shake, shake! This whole recipe also works great for butternut squashes.
rainbowlory says: Jun 24, 2010. 11:56 PM
i just love zippy bags for everything mess goes in the trash!!!
shumaD says: Mar 8, 2012. 7:49 PM
and in the landfill!
Cheroo says: Mar 4, 2012. 2:19 PM
Nice detail and humor in your instructions! I'm going to try this tonight :) I've always done my "French Fries" this way, but love the idea of trying it with sweet potatoes!
Julesizn says: Feb 7, 2012. 2:35 PM
Thank you, Jessyratfink, for this excellent recipe!! I made the fries for my husband on Super Bowl Sunday and we both loved them! This was my first time to bake them successfully. I SO appreciate your detailed instructions. My failed attempts included soggy, burnt, and odd-shaped fries...all of which you addressed and explained why it was important to follow your advice. I will make them more often now. They were sweet, crispy, and soooo yummy! I love serving a dish that everyone says "mmm" when I set it on the table. Thanks again.
jessyratfink (author) says: Feb 8, 2012. 6:26 PM
Yay! I'm so happy you guys liked them. :D
madamcharlene says: Jan 21, 2012. 5:42 PM
And BTW...I never put anything on them either. Why mess with success...and added unnecessary calories. These are exceptional, just "as is." And, Jessy, do you think they are able to get "browned" because you're not using aluminum foil (which I usually do).
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