Sweet potato fries have a way of stealing the show at any meal, and this air fryer version does exactly that with half the effort and almost no mess. A simple spice blend and one sneaky tablespoon of cornstarch are all it takes to get those irresistibly crispy edges and a fluffy, tender center.

I make these on weeknights when I need something fast, satisfying, and just a little bit fun — and they never, ever disappoint.

Variations & Substitutions

I love playing around with the seasoning blend on these fries — it’s one of the easiest ways to completely change the vibe of the dish. Swap smoked paprika for chili powder and cumin for a smoky Tex-Mex twist, or go bold with cayenne and brown sugar for a sweet-heat situation.

Not a fan of olive oil? Avocado oil works beautifully and has a higher smoke point. You can even swap sweet potatoes for regular russet potatoes or butternut squash fries using the same method and timing.

Tips & Tricks for Perfect Results

The number one tip I’ll give you: dry your fries thoroughly. Any moisture left on the potato will steam instead of crisp. The cornstarch is also a must; it creates a light coating that crisps up beautifully in the hot air.

Always cook in a single layer and resist the urge to pile them in. Give them space to breathe! Shake the basket at the halfway mark so every side gets that gorgeous golden color.

Serving Suggestions

These fries are absolutely made for dipping. A chipotle mayo (mix mayo, chipotle in adobo, and a squeeze of lime) is phenomenal alongside them. Classic ketchup always delivers, but sriracha aioli takes things up a notch.

Serve them as a side alongside burgers, grilled chicken sandwiches, or pulled pork sliders. They also make a fantastic base for loaded fries — top with shredded chicken, shredded cheese, jalapeños, and sour cream for a full-on loaded appetizer that’ll disappear fast at any gathering.

Equipment Needed

You don’t need much for this recipe, which is part of why I love it so much! Here’s what you’ll want to have on hand:

Air fryer (basket-style works best for even airflow)
Large mixing bowl
Sharp knife and cutting board
Vegetable peeler
Paper towels
Measuring spoons
Tongs or a spatula for tossing and serving

A mandoline slicer is optional but makes cutting even fries much faster if you have one sitting in a drawer somewhere.

Prep Ahead Tips

You can get a head start on these fries! Cut and peel your sweet potatoes up to 24 hours in advance — just submerge them in cold water in the fridge to prevent browning. When you’re ready to cook, drain them, pat them very dry (extra dry!), and proceed with the recipe.

You can also pre-mix your spice blend and store it in a small jar or zip-lock bag on the counter, so next time it’s a simple dump-and-toss situation.

Budget Tips

Sweet potatoes are one of the most affordable vegetables at the grocery store, especially when bought loose rather than pre-packaged. Buy them in a larger bag if your store carries them — you’ll save money per pound and can use the extras throughout the week in other meals.

The spices used in this recipe are all pantry staples you likely already own. If you’re buying them fresh, look for store-brand versions, which are just as good. A single batch of these fries costs roughly $2–3 to make — hard to beat!

Storage & Reheating

Leftover fries (if you have any!) store well in an airtight container in the fridge for up to 3 days. They will soften overnight, but the good news is they reheat perfectly in the air fryer. Pop them back in at 375°F for 4–5 minutes and they’ll crisp right back up.

Avoid the microwave at all costs — it turns them into mush. For meal prep purposes, you can cut and soak the raw potatoes ahead of time, then dry and season just before cooking for the best results.

Prep Time:10

Cook Time:20

Ingredients

2 large sweet potatoes peeled and cut into ¼-inch sticks
2 tbsp olive oil
1 tsp garlic powder
1 tsp smoked paprika
½ tsp onion powder
½ tsp salt
¼ tsp black pepper
1 tbsp cornstarch

Instructions

Prep your potatoes. Peel and slice sweet potatoes into even ¼-inch sticks — uniform cuts mean even cooking, so don’t skip this step!
Soak and dry. Soak fries in cold water for 20–30 minutes, then pat completely dry with paper towels. This pulls out excess starch and is the key to crispiness.
Season them up. Toss the dried fries in a large bowl with olive oil, cornstarch, garlic powder, smoked paprika, onion powder, salt, and pepper until fully coated.
Arrange in the air fryer. Place fries in a single layer in your air fryer basket. Don’t crowd them — work in batches if needed.
Air fry. Cook at 400°F (200°C) for 18–20 minutes, shaking the basket halfway through, until golden and crispy on the edges.
Serve immediately. These are best fresh out of the fryer while they’re still crackling!

Servings: