
This crispy sweet potato fries recipe transforms ordinary sweet potatoes into addictively crunchy treats without deep frying. The secret lies in a few simple techniques that ensure these oven-baked fries come out perfectly crisp every time while maintaining that sweet potato goodness inside.
I perfected this recipe after countless soggy sweet potato fry disasters. My breakthrough came when I discovered the soaking trick and hot baking sheet method, which completely transformed my fry game.
Ingredients
- Sweet potatoes choose firm potatoes with smooth skin and a vibrant orange color for the best flavor and texture
- Olive oil helps create that crispy exterior while adding a subtle richness
- Garlic powder provides savory depth that balances the natural sweetness
- Paprika adds warmth and color use smoked paprika for an extra flavor dimension
- Salt enhances all flavors and helps draw out moisture for crispier results
- Black pepper adds gentle heat and complexity
- Cornstarch optional creates an ultrathin coating that significantly increases crispiness
Step-by-Step Instructions
- Preheat the Oven
- Set your oven to 425°F and place your baking sheet inside while it heats. This preheating step is crucial as the hot surface creates immediate searing when the fries hit the pan, starting the crisping process immediately rather than allowing the fries to steam.
- Cut the Sweet Potatoes
- Slice your sweet potatoes into uniform quarter-inch sticks. Consistency in size is critical here as varying thickness will result in some fries burning while others remain undercooked. For maximum crispiness, aim for slightly thinner fries, though not so thin they'll burn.
- Soak the Fries
- Submerge your cut fries in cold water for a full 30 minutes. This step dissolves surface starches that would otherwise prevent proper crisping. The water will turn slightly cloudy as the starch releases. Some people change the water halfway through for even better results.
- Season Thoroughly
- After soaking, thoroughly dry the fries with paper towels or a clean kitchen towel. Any remaining moisture will create steam in the oven, resulting in soggy fries. Toss the dried fries with olive oil first to create a base for the seasonings to adhere to, then add all spices, ensuring even coating.
- Arrange and Bake
- Carefully remove the preheated baking sheet and quickly arrange the fries in a single layer with space between each piece. Overcrowding creates steam and prevents crispiness. The sizzle when they hit the hot pan is a good sign. Flip them halfway through baking to ensure even browning.
- Rest Before Serving
- Allow the fries to rest on the hot baking sheet for 3 to 5 minutes after removing from the oven. This final step allows excess moisture to evaporate and the exterior to achieve maximum crispness.

Sweet potatoes have always been my comfort food weakness, but it was discovering the hot baking sheet technique that truly changed my fry game. My daughter, who normally avoids vegetables, devours these and calls them "candy fries" because of their natural sweetness.
Troubleshooting Soggy Fries
The most common reason for soggy sweet potato fries is moisture. Unlike regular potatoes, sweet potatoes contain more moisture, which makes achieving crispiness challenging. Beyond thorough drying after soaking, avoid overcrowding your baking sheet. When fries are too close together, they steam rather than roast. If your first batch turns out soggy, try reducing the amount on your baking sheet by half next time.
Perfect Dipping Sauces
While these fries are delicious on their own, the right dipping sauce elevates them to restaurant quality. Classic ketchup works well, but consider trying a spicy sriracha mayo by mixing 3 tablespoons of mayonnaise with 1 teaspoon of sriracha sauce. For a healthier option, Greek yogurt mixed with herbs and a touch of lemon creates a refreshing contrast to the sweet fries. My personal favorite is a maple cinnamon dip made with Greek yogurt, a touch of real maple syrup, and a sprinkle of cinnamon.
Storage and Reheating
Store leftover fries in an airtight container in the refrigerator for up to 3 days. While microwaving will leave them soft, reheating in a 400°F oven for 5 minutes restores much of their crispiness. For best results, use an air fryer at 375°F for 3 minutes. Unfortunately, these fries do not freeze well after cooking as they become mushy when thawed.
Recipe FAQs
- → Why should I soak sweet potato fries before baking?
Soaking sweet potato fries in cold water for 30 minutes removes excess starch from the surface, which is crucial for achieving crispiness. This step prevents the fries from becoming soggy during baking and helps them develop a better golden-brown exterior.
- → How do I ensure my sweet potato fries get crispy in the oven?
For maximum crispiness: 1) Soak fries to remove starch, 2) Thoroughly pat them dry, 3) Use cornstarch for extra crunch, 4) Preheat the baking sheet, 5) Arrange fries in a single layer without overcrowding, 6) Bake at high temperature (425°F), and 7) Flip halfway through baking.
- → Do I need to peel sweet potatoes before making fries?
Peeling sweet potatoes is optional. The skin contains nutrients and can add texture, but some prefer the uniform appearance and texture of peeled fries. If you choose to leave the skin on, just be sure to wash the potatoes thoroughly before cutting.
- → What's the best way to cut sweet potatoes for fries?
For even cooking, cut sweet potatoes into uniform strips about 1/4 inch thick. First, slice the potato in half lengthwise, then cut each half into planks, and finally cut the planks into sticks. Using a sharp knife and maintaining consistent thickness helps ensure all fries cook at the same rate.
- → What dipping sauces pair well with sweet potato fries?
Sweet potato fries pair beautifully with many dips including: sriracha mayo, honey mustard, garlic aioli, spicy ketchup, maple cinnamon yogurt dip, chipotle mayo, or classic ketchup. The slight sweetness of the potatoes works especially well with creamy or spicy dips that offer flavor contrast.
- → Can I make these fries ahead of time?
Sweet potato fries are best enjoyed immediately after baking when they're at peak crispiness. If you need to prepare ahead, you can cut the potatoes and soak them in water (refrigerated) up to 24 hours in advance. Just drain, dry thoroughly, and season right before baking.