Crispy Oven Baked Sweet Potato Fries

By Mieke

I love sweet potato fries. I often have them for dinner with a rando avocado dip of avocado smushed together with whatever else I have laying around. Usually coriander and lime, often some kind of spice, maybe some garlic.

That’s really all I’ve got to say about them. So on to the recipe.

Foolproof Oven Baked Sweet Potato Fries

Dorothy Porker
Spicy, crispy full proof sweet potato fries from the oven that work every time (if you're patient).
Prep Time 10 minutes
Cook Time 35 minutes
Course Side dish
Cuisine Vegan, Vegetarian
Servings 2


  • Oven
  • Baking sheet
  • Parchment
  • Large bowl
  • Small bowl
  • Tea towel


  • 2 large sweet potatoes
  • 2 T - 30 gr corn starch
  • 1 t - 5 gr cumin
  • 1/2 t - 2.5 gr chili
  • 1 t - 5 gr paprika smoked if you've got it
  • 1/2 t - 2.5 gr garlic powder
  • 2 T - 30 ml vegetable oil I use sunflower - avoid olive oil
  • pinch salt SET ASIDE


  • Pre-heat an oven to 225°C/ 435°F and line a baking sheet with parchment paper.
  • Wash the sweet potatoes and cut it into 50x50 mm - 2"x2" fries. The more evenly you cut them, the more even they will cook. So try and be tidy (or not).
  • I like to leave the skin on because I'm lazy and I like the added texture but feel free to add extra work if that's your thing and peel your potato before you cut it into fries.
  • Place the fries into a bowl of cold water and let them sit there while you mix your spices.
  • Mix the spices with the cornstarch. DO NOT ADD THE SALT.
  • Strain and towel dry the fries.
  • Place the dried fries back into the (dried) bowl, slowly drizzle with roughly 2 T - 30 ml of oil and mix together so all the fries are coated evenly. You may not need all of the oil.
  • Sprinkle your fries with a thin layer of the cornstarch/ spice mix, making sure the fries get evenly coated.
  • Place the fries on your baking sheet in a single layer. Make sure none of the fries are touching. Make sure your fries have breathing room or they won't crisp up.
  • Bake your fries in the oven for 30-45 minutes. Turn the fries every 10-15 minutes until they are crisp (or crisp enough, because well really now...). Remove smaller fries if they're done cooking sooner and have a little pre-nibble if you want.
  • Season your fries with salt before serving.


Times and temps may vary, depending on your oven. You'll have to test what works best for you.
Keyword fries, full proof recipes, oven baked, side dish, side dishes, sides, sweet potato

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