Spicy & Crispy Roasted Sliced Sweet Potatoes Recipe

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by Maggie Turansky

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If you’re after a super delicious and easy side dish to serve for any occasion, then these sliced sweet potatoes are an excellent choice.

A bit different in presentation and flavour when compared to my sweet potatoes with cumin and paprika and different in texture than my mashed sweet potatoes, this is yet another great way to enjoy this versatile root vegetable.

Requiring only about five minutes in active prep time, these potatoes are a high-impact, low-effort side dish that are absolutely delicious when topped with a bit of chipotle mayo or served alongside something like my braised portobellos or black bean patties.

Sliced Sweet Potatoes
Sliced Sweet Potatoes

How to Make Oven-Baked Sliced Sweet Potatoes

Start by prepping your sweet potatoes – all you need to do is slice them thinly. I don’t even bother peeling them as I like the texture that the peel adds – just make sure they’re well scrubbed.

You can use a mandoline to make extremely quick work of slicing the potatoes or you can opt to do it by hand – it’s up to you. Just try to ensure that they’re of an even thickness.

Slicing the sweet potatoes
Slicing the sweet potatoes

Once sliced, add them to a bowl and drizzle with a bit of olive oil and season generously with salt and pepper. Then, sprinkle over a bit of cornstarch. This helps make the sweet potatoes crispy and is a good addition to the recipe.

Then, add a bit of chili powder and a pinch of ground cinnamon. Mix everything together and ensure the potato slices are all evenly coated.

Adding the spices and cornstarch
Adding the spices and cornstarch

Transfer the potatoes to a parchment-lined baking sheet and spread them out so they are in a thin, even layer.

Then, move them to a 220°C/425°F oven and roast for about 20-25 minutes – just until the potatoes are crisp and fork tender.

Roasting the sweet potatoes
Roasting the sweet potatoes

Then, all you need to do is serve and enjoy!

Oven Baked Sliced Sweet Potatoes

Oven-Baked Sliced Sweet Potatoes

These easy roasted sweet potatoes are crispy, lightly spicy and super delicious.
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Servings 2
Prep Time 5 minutes
Total Time 30 minutes


  • 500 g sweet potatoes about 1-2 large, thinly sliced
  • 2 tsp cornstarch/cornflour
  • 1 tbsp chili powder
  • ¼ tsp cinnamon


  • Preheat oven to 220°C/425°F. Add the sliced sweet potatoes to a large bowl. Drizzle with 1 tbsp of olive oil and season generously with salt and pepper. Sprinkle over the cornstarch, chili powder and cinnamon and stir until evenly coated.
    Adding the spices and cornstarch
  • Spread the potatoes on a parchment-lined baking sheet. Transfer to the oven and roast for 20-25 mintues, or until crisp and fork tender. Serve immediately, perhaps with a side of chipotle mayo.
    Roasting the sweet potatoes


Calories: 235kcal | Carbohydrates: 54g | Protein: 4g | Fat: 1g | Saturated Fat: 0.1g | Polyunsaturated Fat: 0.4g | Monounsaturated Fat: 0.1g | Sodium: 203mg | Potassium: 922mg | Fiber: 9g | Sugar: 11g | Vitamin A: 36654IU | Vitamin C: 6mg | Calcium: 91mg | Iron: 2mg

Disclaimer: Nutritional information is automatically generated and provided as guidance only. Accuracy is not guaranteed.

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These roasted sliced sweet potatoes are simple to make and super delicious to eat!

Are you looking for a great sweet potato recipe? Have any questions? Let me know in the comments!

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Maggie is the creator behind No Frills Kitchen. She is a world traveller, home cook and recipe developer who loves to experiment with new cuisines and techniques at every chance she gets. No stranger to improvising and making do with the equipment and ingredients she has available, she is passionate about sharing her knowledge with others. Read More

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