roasted sweet potatoes in a white bowl

Learn how to make Crispy Roasted Sweet Potatoes with perfect caramelization on the outside and a tender soft inside. The perfect healthy side dish, topping on salads, filling in buddha bowls or stuffed in wraps.

roasted sweet potatoes on a baking tray

Sweet potatoes are probably one of the most versatile vegetable, especially during the autumn and winter season. They’re delicious in casseroles, mashes, twice baked, soups and stews and are the perfect vehicle to stuff practically anything in. However, they are especially delicious when roasting them to crispy caramelized perfection, which is what todays post is all about.

ingredients for roasted sweet potatoes

What You Need

  • Sweet Potatoes: you can find many varieties of sweet potatoes at your grocery store but my favourite types to roast with todays method are Jewel and Garnet. Choose firm sweet potatoes without growth sprouts or patchy colours on their skin.
  • Oil: either coconut oil or olive oil.
  • Corn Starch: my secret weapon for the crispiest roasted sweet potatoes!
  • Nutritional Yeast OR Coconut Sugar: this also helps with the crispiness of the roasted sweet potatoes while giving it some extra flavour.
  • Spices: salt, paprika, cumin, garlic powder, onion powder, chili powder, etc.
roasted sweet potatoes on a baking tray

How to Make Crispy Roasted Sweet Potatoes

How to Cut Sweet Potatoes for Roasting

There are a couple of different ways you could cut your sweet potatoes to roast in the oven such as thin sticks for sweet potatoes fries, roasted sweet potato wedges, roasted sweet potatoes halves or even just a whole roasted sweet potato. Naturally, the bigger the sweet potato cuts the longer time it will need to bake. For this recipe, we’re making roasted sweet potato chunks so the best size I’ve found is cutting them into 1/2 inch cubes.

  1. Peel the Sweet Potato: this is optional, but recommended for best texture and flavour.
  2. Slice off Thinner Ends & Rounded Side: again, optional but I find cutting off one rounded side off makes it easier to slice into rounds in the next step because it stays sturdier on the cutting board.
  3. Cut into Rounds: slice the sweet potato into 1/2 inch thick rounds.
  4. Cut into Cubes: cut each sweet potato round into 1/2 inch equal sized chunks.

So now that we’ve got the most difficult part down, the rest is easy peasy!

How to Roast Sweet Potatoes

  1. Cut the Sweet Potatoes: into 1/2 inch chunks (as instructed above)
  2. Season and Coat: toss the sweet potatoes in oil, corn starch, nutritional yeast and seasonings.
  3. Bake: at 425 degrees fahrenheit, flipping the sweet potatoes every 10 minutes to encourage even cooking and caramelization.
crispy roasted sweet potatoes on a baking tray

Tips for Crispy Roasted Sweet Potatoes

  • Sharpen Your Knife: it’ll make cutting the sweet potatoes much easier and actually less dangerous because you’ll be able to slice through the sweet potato without putting a ton of pressure on it- usually causing knives and hands to slip.
  • Use a Large Baking Sheet: crowded pans = steaming vegetables = mushy soggy vegetables. Ensure the sweet potatoes have enough room and are not overlapping to encourage crispy caramelization.
  • Flip Every 12-15 Minutes: Try not to flip too often as that disturbs the caramelization process but you also want to flip them because it encourages even baking.

Roasted Sweet Potatoes FAQ

How to Pick a Good Sweet Potato

Sweet potatoes are available all year around but they are the tastiest in the fall throughout winter. Here are some handy tips to picking out sweet potatoes perfect for roasting:

  • Choose Orange or Red Skinned Sweet Potatoes: these are perfect for roasting with this method as they’re sweeter and less starchy so won’t dry out. Sometimes these are mislabeled yams.
  • Check the Skins: choose firm sweet potatoes with smooth skins without any discolourations, wet/soft spots or bruises.

Do you have to boil sweet potatoes before baking?

You can boil your sweet potatoes before baking and it does speed up the baking time… however boiling them also takes some time so why not save yourself some dishes and just throw them all in the oven? 🙂

Do you have to peel sweet potatoes before roasting?

Again, personal preference but I find the texture and flavour for this particular method to be best when the sweet potatoes are peeled.

How to Store Leftover Roasted Sweet Potatoes

Once fully cooled, place in a air tight container covered in the fridge for up to 4 days.

What to Serve Roasted Sweet Potatoes With

  • Chickpea Sweet Potato Buddha Bowls
  • Quinoa Salad
  • Tacos
  • Burrito Bowls
  • Salads
crispy roasted sweet potatoes in a bowl

If you bake up these perfectly Crispy Roasted Sweet Potatoes let me know how you liked it by leaving a comment and rating below or by tagging me on Instagram @Okonomikitchen, I love seeing all of your tasty recreations!
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roasted sweet potatoes on a baking tray

Crispy Roasted Sweet Potatoes

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 3 reviews

  • Author: Lisa Kitahara
  • Total Time: 35 minutes
  • Yield: 2 servings 1x


These Crispy Roasted Sweet Potatoes require just 5 ingredients to achieve the perfect side or topping for any dish! Easy to make and is a great addition to any healthy meal prep.


Units Scale

Savoury Seasoning Blend (optional):


  1. Pre-heat oven to 425 F (210 C).
  2. Peel and cube the sweet potatoes into 1/2 inch sized pieces. Transfer it to a parchment or silicon lined baking pan and toss in olive oil, corn starch, nutritional yeast (or coconut sugar for sweeter roasted sweet potatoes) and salt. Sprinkle on any seasonings if using and toss to coat. Spread out the sweet potatoes so they are not overlapping or touching each other. Bake for 30 minutes, flipping the sweet potatoes half way (around the 15 minute mark). 


  • *use nutritional yeast if baking a more savory type dish and coconut sugar to bring out the sweetness of the sweet potatoes more
  • Helpful Equipment: baking tray, silpat, parchment paper 
  • Nutritional Information Disclaimer: Nutrition information is a rough estimate calculated on an online tool (Cronometer). 
  • Prep Time: 5 minutes
  • Cook Time: 30 minutes
  • Category: how-to
  • Method: baking
  • Cuisine: vegan, gluten free


  • Serving Size: 1 serving
  • Calories: 506
  • Sugar: 18.8g
  • Sodium: 838mg
  • Fat: 10.5g
  • Saturated Fat: 1.4g
  • Unsaturated Fat: 8.5g
  • Trans Fat: 0
  • Carbohydrates: 95.6g
  • Fiber: 14.5g
  • Protein: 9.2g
  • Cholesterol: 0


crispy roasted sweet potato recipe pinterest graphic

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About Lisa

I'm Lisa, a home cook, recipe developer and founder of Okonomi Kitchen. Here, you'll find a mix of classic and modernized Japanese recipes, and creative, plant-forward meal inspiration using seasonal ingredients. I hope to share more about Japanese cuisine and culture through food and recipes.

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  1. This has become such an an easy, healthy go-to side for last minute meals!
    If you haven’t made this because you, like me, have always had terrible results cooking sweet potatoes, fear not! This is so simple and the reward is worth the fear.
    Try it!
    You’ll love it.

  2. Dang! So sooo good – I never thought corn starch would be the star ingredient, but they really helped amp up my roasted sweet potato game. I also found that using a silicone baking mat in the oven helps a ton since I don’t need to spray any extra oil on a metal baking sheet which sometimes makes the potatoes a bit soggy/take more time to crisp up.

  3. I tried this recipe with both nutritional yeast and palm sugar (separately) to compare the savory vs sweet versions. And both were good! Personally, I preferred the sweeter one and especially liked the lingering scent and taste of the coconut oil. I would note the next time to really emphasize NOT overcrowding the sweet potatoes since I think mine was a bit soggy. Other than that, I would definitely remake these! 🙂

    1. Defiantly guilty of over crowding too haha hard not to but I’m glad they still turned out 🙂