Air Fryer Sweet Potato Fries

If you’ve ever tried making sweet potato fries and they came out soggy, you’re not alone. Sweet potatoes have a lot of moisture, which makes getting them crispy a bit tricky.

This air fryer method solves that problem. A quick soak in cold water, a light coating of cornstarch, and the right temperature do all the work for you.

The seasoning is a simple combo of smoky, garlicky, and slightly sweet flavors. Nothing complicated, but it hits all the right notes.

No deep frying needed. Just your air fryer, a couple of sweet potatoes, and a few pantry staples.

These are great as a side dish or honestly just as a snack on their own. Let’s get into the recipe.

Why You’ll Love This Recipe

Crispier Than Oven-Baked – The cornstarch coating plus the air fryer’s circulating heat gives these sweet potato fries a seriously crispy outside that you just can’t get from a regular oven.

Way Less Oil Than Deep Frying – You only need 2 tablespoons of olive oil for the whole batch, so you get that golden fried texture without dunking your sweet potatoes in a pool of grease.

The Spice Combo Is Perfect – Smoked paprika, garlic powder, and a hint of cinnamon create this sweet-savory-smoky flavor that makes these fries way more exciting than plain salted ones.

Ingredients

• 2 large Sweet Potatoes, peeled
• 1 tbsp Cornstarch
• 2 tbsp Olive Oil
• 1/2 tsp Garlic Powder
• 1/2 tsp Smoked Paprika
• 1/4 tsp Cinnamon
• 1/2 tsp Salt
• 1/4 tsp Black Pepper

How to Make

Step 1

Cut the sweet potatoes into even 1/4-inch thick sticks. Soak them in cold water for 30 minutes, then drain and pat completely dry with paper towels. This step is key for crispy fries.

Step 2

Place the dried sweet potato sticks in a large bowl. Sprinkle with cornstarch and toss until evenly coated. Add olive oil, garlic powder, smoked paprika, cinnamon, salt, and pepper, and toss again.

Step 3

Preheat the air fryer to 380°F (193°C) for 3 minutes.

Step 4

Spread the fries in a single layer in the air fryer basket, working in batches if needed to avoid overcrowding. Cook at 380°F for 12 to 15 minutes, shaking the basket every 5 minutes.

Step 5

Increase the temperature to 400°F and cook for 2 to 3 more minutes until the edges are crispy and lightly charred. Serve immediately.

Tips

Cut Your Fries the Same Size

This matters more than you think. If some fries are thin and some are thick, the thin ones will burn while the thick ones stay soft and undercooked in the middle.

Try to keep every stick around 1/4-inch thick and roughly the same length. It doesn’t have to be perfect, but get it as close as you can so they all cook at the same rate.

A sharp knife makes this way easier. If your knife is dull, the sweet potato will slip around and you’ll end up with uneven pieces no matter how careful you are.

Don’t Skip the Soaking and Drying

Soaking the sweet potato sticks in cold water for 30 minutes pulls out a lot of the surface starch. That starch is what makes fries turn limp and soggy instead of crispy, so you really want to get rid of it.

The drying part is just as important as the soaking. After you drain them, spread the fries out on a clean kitchen towel or a few layers of paper towels and pat them down until there’s no visible moisture left.

If they’re still damp when you add the cornstarch and oil, the coating won’t stick properly and you’ll end up with steamed fries instead of crispy ones. Take the extra minute to make sure they’re truly dry.

Coat with Cornstarch Before the Oil

The order here matters. You want to toss the dry sweet potato sticks with the cornstarch first, before you add the olive oil and spices. The cornstarch needs to cling directly to the surface of the fries to create that thin, crispy shell.

If you add the oil first, the cornstarch clumps up and doesn’t distribute evenly. You’ll get patches of gummy coating on some fries and nothing on others.

Once every stick has a light dusting of cornstarch, then drizzle in the oil and spices and toss everything together. You should see a thin, even coating on each fry with no big white spots of dry cornstarch left.

Related Recipes

• Air Fryer Crispy Avocado Fries
• Air Fryer Crispy Parmesan Zucchini Fries
• Air Fryer Garlic Parmesan Potato Wedges
• Air Fryer Parmesan Truffle Fries

Frequently Asked Questions

Do I really need to soak the sweet potatoes in water first?

Yes, soaking removes excess starch from the surface, and that’s what helps the fries get actually crispy instead of soft and limp. If you skip this step, the fries will steam more than they crisp up in the air fryer.

If you’re short on time, even a 15-minute soak makes a difference – but the full 30 minutes gives the best results. Just make sure you dry them really well with paper towels afterward, because any leftover moisture will work against you.