Air Fryer Butternut Squash Fries with Garlic Aioli

Butternut Squash Fries are a crispy, golden, and flavorful alternative to traditional potato fries. Made with fresh butternut squash, a light coating of oil, garlic, paprika, and herbs, these fries cook quickly in the air fryer and develop caramelized edges with a naturally sweet center. A creamy garlic aioli adds a rich, tangy finish that makes this simple side dish feel extra special.

These Butternut Squash Fries are perfect for fall dinners, snack boards, holiday meals, or an easy weeknight side. They use simple ingredients, require much less oil than deep-fried fries, and pair well with chicken, burgers, sandwiches, seafood, and vegetarian mains.

Prep Time: 20 minutes
Cook Time: 15 to 18 minutes
Total Time: About 40 minutes
Servings: 4

Ingredients

For the Fries

• 1 medium butternut squash, about 2 pounds
• 1 1/2 tablespoons olive oil
• 1 tablespoon cornstarch
• 1 teaspoon garlic powder
• 1 teaspoon smoked paprika
• 1/2 teaspoon onion powder
• 1/2 teaspoon dried thyme
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 2 tablespoons finely grated Parmesan, optional

For the Garlic Aioli

• 1/2 cup mayonnaise
• 1 small garlic clove, finely grated
• 1 tablespoon fresh lemon juice
• 1 teaspoon Dijon mustard
• 1 teaspoon extra virgin olive oil
• 1/4 teaspoon salt
• Pinch of black pepper

Optional Garnishes

• Chopped fresh parsley
• Extra Parmesan
• Lemon wedges
• Red pepper flakes
• Smoked paprika

Why You’ll Love This Recipe

Butternut Squash Fries have a naturally sweet flavor that becomes even better when the edges caramelize in the air fryer. The combination of garlic, paprika, thyme, and Parmesan gives them a savory balance, so they work just as well with dinner as they do as a snack.

Another reason to love Butternut Squash Fries is how quickly they cook. Once the squash is peeled and cut, the air fryer handles the rest with very little oil. The garlic aioli can be mixed in a few minutes while the fries cook.

How to Make Butternut Squash Fries

Step 1: Peel and Cut the Squash

Cut off both ends of the butternut squash. Peel the skin with a sturdy vegetable peeler, then slice the squash in half lengthwise. Scoop out the seeds and stringy center with a spoon.

Cut the flesh into even sticks about 1/2 inch thick and 3 to 4 inches long.

Keeping the pieces close in size helps Butternut Squash Fries cook evenly and prevents thinner pieces from burning before thicker ones are tender.

Step 2: Dry the Squash

Spread the squash sticks over paper towels or a clean kitchen towel and pat them dry.

Removing surface moisture is important because excess water can make the fries steam instead of crisp.

Step 3: Coat with Cornstarch

Place the squash sticks in a large mixing bowl.

Sprinkle the cornstarch over them and toss until each piece has a very light, even coating.

Cornstarch helps Butternut Squash Fries develop a drier, crispier exterior in the air fryer.

Step 4: Add Oil and Seasoning

Drizzle the olive oil over the squash.

Add garlic powder, smoked paprika, onion powder, thyme, salt, and black pepper.

Toss gently until every fry is evenly coated. If using Parmesan, add it now and toss again.

Step 5: Preheat the Air Fryer

Preheat the air fryer to 390°F or 200°C for about 3 minutes.

Starting with a hot basket helps Butternut Squash Fries begin browning immediately rather than slowly steaming.

Step 6: Arrange in a Single Layer

Place the fries in the air fryer basket in a single layer with a little space between them.

Do not overcrowd the basket. Air needs to circulate around each piece for the best texture.

Depending on the size of your air fryer, cook the fries in two or three batches.

Step 7: Air Fry

Cook for 8 minutes, then open the basket and shake or flip the fries.

Continue cooking for another 7 to 10 minutes until the edges are golden brown and the centers are tender.

Butternut Squash Fries can brown quickly during the final few minutes, so check them often.

Step 8: Make the Garlic Aioli

While the fries cook, combine mayonnaise, grated garlic, lemon juice, Dijon mustard, olive oil, salt, and black pepper in a small bowl.

Whisk until smooth.

Taste and add more lemon or garlic if desired.

Step 9: Finish the Fries

Transfer the cooked fries to a serving plate.

Sprinkle with parsley, extra Parmesan, smoked paprika, or a small pinch of red pepper flakes.

Serve Butternut Squash Fries immediately with the garlic aioli on the side.

Serving Suggestions

Butternut Squash Fries are delicious with grilled chicken, burgers, turkey burgers, steak, salmon, or baked fish. Their slightly sweet flavor also pairs nicely with spicy or smoky main dishes.

For a vegetarian meal, serve Butternut Squash Fries alongside a grain bowl, chickpea salad, veggie burger, or roasted vegetable plate.

They also make a fun appetizer. Arrange them on a platter with garlic aioli, ranch, spicy mayo, or yogurt dip.

For another crispy and flavorful side dish, try our Air Fryer Smashed Brussels Sprouts with Hot Honey.

Recipe Tips

Use a sharp knife and sturdy vegetable peeler because butternut squash can be firm.

Cut the fries as evenly as possible for consistent cooking.

Pat the squash dry before seasoning.

Use only a light coating of cornstarch. Too much can leave a powdery texture.

Do not overcrowd the air fryer basket.

Butternut Squash Fries get crispier when hot air can circulate around every piece.

Shake or flip halfway through cooking.

Serve immediately because the fries soften as they cool.

If making several batches, keep the finished fries warm in a 200°F or 95°C oven.

Easy Variations

For a spicy version, add cayenne pepper or chili powder to the seasoning.

Butternut Squash Fries can also be seasoned with cinnamon and a tiny pinch of brown sugar for a sweet-and-savory fall variation.

For Mediterranean flavor, use oregano, garlic powder, Parmesan, and a little lemon zest.

For smoky fries, increase the smoked paprika and add a pinch of cumin.

You can also replace Parmesan with nutritional yeast for a dairy-free cheesy flavor.

If you enjoy Mediterranean-style meals, you may also like our Mediterranean Grilled Chicken Bites with Garlic Yogurt Sauce.

Make-Ahead Instructions

Butternut Squash Fries are best cooked fresh, but you can prepare the squash ahead.

Peel and cut the squash into fry-shaped pieces up to one day in advance. Store them in an airtight container lined with paper towels in the refrigerator.

Mix the garlic aioli ahead as well. Cover and refrigerate it for up to 3 days.

Wait to add cornstarch, oil, and seasonings until just before air frying.

Storage and Reheating

Store leftover Butternut Squash Fries in an airtight container in the refrigerator for up to 3 days.

To reheat, return them to the air fryer at 375°F or 190°C for 4 to 6 minutes, shaking the basket once.

This method restores more crispness than reheating in the microwave.

The microwave is convenient, but the fries will be softer.

Freezing cooked fries is not recommended because the squash can become watery after thawing.

Nutrition Information

Approximate nutrition per serving, including a small portion of aioli:

Calories: 260
Protein: 3 g
Carbohydrates: 29 g
Fat: 16 g
Saturated Fat: 3 g
Fiber: 5 g
Sugar: 6 g
Sodium: 420 mg

Nutrition values are estimates and may vary depending on the size of the squash, amount of oil, Parmesan, and aioli used.

Frequently Asked Questions

Can I use pre-cut butternut squash?

Yes. Pre-cut squash saves time, but you may need to trim the pieces into similar fry shapes so they cook evenly.

Why are my fries soft instead of crispy?

Butternut squash contains more moisture than potatoes. Dry the pieces well, avoid overcrowding, use a little cornstarch, and cook in a single layer.

Do I need to soak the fries first?

No. Unlike some potato fries, Butternut Squash Fries do not need to be soaked in water before cooking.

Can I make them without cornstarch?

Yes. They will still taste good, but the exterior may be slightly less crisp.

Can I make them in the oven?

Yes. Bake at 425°F or 220°C on a large sheet pan for about 25 to 30 minutes, flipping halfway through.

Can I make the aioli lighter?

Yes. Replace half of the mayonnaise with plain Greek yogurt.

What other dips work well?

Ranch, chipotle mayo, honey mustard, tahini sauce, yogurt herb dip, and spicy ketchup all pair well with these fries.

Final Thoughts

Butternut Squash Fries are an easy way to turn a seasonal vegetable into a crispy, flavorful side dish. The air fryer brings out the natural sweetness while garlic, paprika, herbs, and Parmesan add plenty of savory flavor.

Keep this Butternut Squash Fries recipe in your fall rotation whenever you want a colorful, simple, and satisfying air fryer side dish that comes together with everyday ingredients.