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These Crispy Roasted Sweet Potatoes are an easy, healthy side dish that goes with about any meal! Roast in the oven or try them in the air fryer!
Just prepped these for lunch/dinners for the week and they’re amazing! I’ve made roasted sweet potatoes more times than I can count but will only make them this way from now on. So good!
Lindsay
These sweet potatoes have a fluffy interior and a well-seasoned crisp exterior!! The secret is the combination of high heat, the perfect seasoning (with a secret ingredient to soak up moisture!) and even cooking! Let’s get cookin’….
Ingredients Needed for Crispy Roasted Sweet Potatoes
- Raw sweet potatoes
- Olive oil – Vegetable oil will work, too.
- Cornstarch
- Salt, pepper & seasonings
How to Cube Sweet Potatoes
- Peel the sweet potatoes
- Cut into slices (for this recipe, I cut into 1/2-inch slices)
- Cut each slice into cubes, keeping them as evenly-sized as possible for even cooking
Roasting Sweet Potatoes
First, you’ll combine the olive oil, seasonings and cornstarch. Then, pour that over the cubed sweet potatoes and stir until well-coated.
Then, you’ll spread them out on a parchment-lined baking sheet and put into a hot oven. After baking 15 minutes, flip them with a spatula and continue to bake until golden brown and crispy!
How to make roasted sweet potatoes crispy
There are a few things that help make sweet potatoes crispy. Here are a few things that help!
- Oven temperature. Make sure your oven is preheated before putting the pan in the oven. The super hot oven will help get a nice crisp exterior on your potatoes.
- Small, even pieces. Try to cut the sweet potatoes into even cubes (I like to do about 1/2 inch). This will ensure that the whole pan cooks evenly. I don’t recommend doing large cubes as the outside will be done before the interior of the cubes are soft.
- Give them space. If they’re too close to each other, the hot air can’t get to all sides of the cubes, so they won’t be as crispy.
- Cornstarch! I tested this recipe with and without cornstarch (which helps soak up any extra moisture) and found that it does help make these more crisp.
- The pan matters. Use a pan with low sides (or no sides) to get the best air movement around the potatoes. Also, put the potatoes right on the pan or use parchment for best results (silicone baking mats and foil don’t seem to work as well).
Roasted Sweet Potatoes in the Air Fryer
This recipe would also work great in an air fryer! Once the sweet potato cubes are coated in the oil/seasoning mixture, place them in an even layer in the air fryer preheated to 425F. If they don’t all fit, you may have to work in batches.
Shake the basket (or flip the sweet potatoes) after about 5 minutes. Continue to let the sweet potatoes cook for 5-8 minutes, or until golden brown and crispy! Please do note that air fryers vary greatly – keep a close eye on them your first time to see how the timing goes! 🙂
Other Healthy Side Dishes to Try
You can find all of my side dishes here! Below I’ve pulled together a few of my more health-conscious side dishes for you to check out!
- Crispy Roasted Potato Wedges
- Roasted Baby Carrots
- Air Fryer Brussels Sprouts
- Homemade Applesauce
- Mexican Street Corn Salad
Crispy Roasted Sweet Potatoes
Equipment
- 1 Sheet Pan
Ingredients
- 1 teaspoon salt
- 1/2 teaspoon black pepper
- 1/2 teaspoon smoked paprika
- 1/4 teaspoon garlic powder
- 1/4 teaspoon onion powder
- 1 1/2 teaspoons cornstarch
- 4 cups peeled & cubed sweet potatoes 1/2 inch cubes
- 3 tablespoons olive oil
Instructions
- Preheat oven (or an air fryer) to 425°F.
- In a small bowl, combine the salt, pepper, paprika, garlic, onion powder and cornstarch; set aside.1 teaspoon salt, 1/2 teaspoon black pepper, 1/2 teaspoon smoked paprika, 1/4 teaspoon garlic powder, 1/4 teaspoon onion powder, 1 1/2 teaspoons cornstarch
- Add the cubed sweet potatoes to a large bowl and drizzle with olive oil and the seasoning.4 cups peeled & cubed sweet potatoes, 3 tablespoons olive oil
- Stir until the sweet potatoes are evenly coated.
- Spread the sweet potatoes onto a large cookie sheet.
- Bake for 15 minutes then flip them over with a spatula. Bake an additional 5-10 minutes or until the sweet potatoes are soft on the inside and golden and crisp on the exterior.
Hello Kelsey,
Just a question about using cornstarch for the potatoes, do u taste the cornstarch at all on the potatoes???
Nope!!! You won’t notice the cornstarch – it just helps crisp up the potatoes! 🙂
Tried your Crispy Roasted Sweet Potatoes. They were very good and I will be making them again. A quick recipe. Also, I liked the ability to scale the recipe since we are a two person household. Thank you.
Thank you for the feedback – I appreciate it!!
These were delicious, but not crispy. We used a sheet pan with low sides, parchment and had the oven at 425 (because that is what our other item cooked at). I think next time I will increase the cornstarch.
Hello Angela, When I’m going for crispy, I always skip the parchment paper and roast directly on the pan. Makes for a bit more cleanup, but a better result. Priorities 🙂
These sweet potatoes turned out great! Will make again soon; thanks for the recipe.
Just prepped these for lunch/dinners for the week and they’re amazing! I’ve made roasted sweet potatoes more times than I can count but will only make them this way from now on. So good!
That makes me SO happy to hear!!! ~Kelsey
I was looking for a crispy sweet potato recipe and this fits the bill.
Thank you for all your great recipes.
Hope you and your family have a Happy New Year.
is there an alternative to the cornstarch or can you leave that off?
Hi Tammy – The cornstarch helps make the sweet potatoes a little more “crisp!” You can certainly leave out the cornstarch and they’ll taste the same (might not be quite as crispy!). ~Kelsey
Try tapioca or arrowroot starch?
Can you sub with flour for cornstarch, and is it best to increase the cornstarch (flour?) to achieve a very crispi outcome?
Hi Suzanne – I’d stick with cornstarch for the most crispy exterior on the sweet potatoes. I’d refrain from increasing it much….it should be quite crisp as is! 🙂 ~Kelsey
Love this!!!
Love this recipe! I have made it several days in a row due to many requests/ high demand 🤣
Thank you
Love this recipe for roasted sweet potatoes. I always chop some onion to mix in with the sweet potatoes. The seasoning can’t be beat, perfection! This is my go to recipe.
Is this recipe yams or sweet potatoes?
Sweet Potatoes
Excellent I love the way these turned out I will definitely be adding them to my regular rotation.
Woohoo! Thanks, Aleisa!
ABSOLUTELY DELICIOUS! Wouldn’t change a thing! ❤️
Loved this! Sweet, spicy and crispy!
Is the recipe for fan assisted oven as it doesn’t say or have the conversions? I tried making this and it tasted good but wasn’t crispy unfortunately.
I just used a regular conventional oven for this recipe – you can also use convection.
Looks amazing! Would this work in a convection oven?
Yes! The timing might be a little different, but just check it a little early, just in case! 🙂
I make roasted sweet potatoes often. This recipe is my favorite. Crispy outside soft and creamy inside. Will be making again soon.
These potatoes were so crispy. I did these potatoes with regular potatoes as well as Sweet potatoes. Both were great
Loved this recipe! I usually roast butternut squash, but found this recipe when I had a bunch of sweet potatoes left from Thanksgiving. Nice hint of pepperiness and salty-sweet combo is lovely. I also added Cumin.
SO glad you enjoyed it! 🙂
🔥 sooo good and crispy! I eat sweet potatoes all the time w salads etc so these are what I’ll be making forever .. thank you:)
SO glad you enjoyed them, Melanie!!