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how to make sweet potato fries in the air fryer

Frozen Sweet Potato Fries in the Air Fryer {with Spicy Maple Mustard Sauce}

  • Author: Gina House | World of Vegan
  • Prep Time: 5 minutes
  • Cook Time: 15 minutes
  • Total Time: 20 minutes
  • Yield: 4 servings 1x
  • Category: Side
  • Method: Air Fryer
  • Cuisine: American
  • Diet: Vegan


Incredibly fast and flavorful sweet potato fries that you can make right from the freezer! Here’s how to make the perfect frozen sweet potato fries in an air fryer. The outside is satisfyingly crisp, while the inside is soft and fluffy. You’ll find this spicy air fryer snack really fun to make and even more fun to eat. Keep them plain for spice up your fries with the optional additions we list in the recipe!



Main Ingredients:

  • ½1 bag of frozen sweet potato fries (I used the Alexa brand, but the 356 Whole Foods brand is very good, too.)
  • Optional: Spray Oil (I used avocado oil)
  • Optional: ¼ teaspoon of cayenne pepper (if you like spicy fries)
  • Optional: ½ teaspoon of black pepper (if you like peppery fries) 

Spicy Maple Mustard Sauce Ingredients:

  • 4 tablespoons of maple syrup
  • 2 tablespoons of Dijon mustard
  • ¼ teaspoon of dry mustard powder
  • ½ teaspoon of garlic powder
  • ¼ teaspoon of cayenne pepper (or to taste)
  • Squirt of sriracha or hot chili paste (optional)


  1. If your air fryer requires preheating, preheat the air fryer at 400 degrees for 5 minutes.
  2. OPTIONAL: If you’d like to add spices, add frozen fries to a large bowl and spritz with a little bit of spray oil. Stir. Sprinkle on the black and/or cayenne pepper and mix. If you prefer plain fries, skip this step.
  3. When the air fryer is ready, dump half the bag of frozen sweet potato fries (or however many will fit) into the air fryer basket, arranging the fries to lay flat leaving some room for the air to move around them.
  4. Cook at 400 degrees for 8 minutes. Shake or flip the fries over and cook for another 7 minutes at the same temperature.
  5. While they’re cooking, make the Spicy Mustard sauce. In a small bowl, mix all of ingredients together. Whisk until well blended. Put aside for later.
  6. Serve your seasoned fries along with the Spicy Mustard Sauce or dip of choice. Enjoy while hot.


  • Cooking Time – Because some air fryers are different, it might take you a little more or less than 15 minutes for the fries to be done. Check on the fries halfway to see how they’re doing. When golden brown and crispy, it’s time to take them out.
  • These air fryer sweet potato fries are vegetarian, dairy-free, soy-free, gluten-free, nut-free, sugar-free, plant-based, and totally delicious! 

Keywords: vegetarian, sweet potatoes, air fryer, side, fries, gluten-free, nut-free, soy-free, sugar-free, sweet potato