Crispy Sweet Potato Fries with Three Flavorful Dipping Sauces

These crispy sweet potato fries, served with three flavorful dipping sauces, deliver a satisfying crunch with every bite. Lightly dusted with coarse sea salt and finished with a starch coating before baking, they become a delicious side or snack that’s far from soggy.

I adore a hot, golden fry. The idea of taking a humble root, slicing it into long strips and giving it a crunchy finish is endlessly satisfying. Sweet potatoes bring their own charm — naturally sweet, versatile, and perfect for everything from pies to pancakes. In this recipe the spotlight is on crispy baked sweet potato fries paired with three distinct dipping sauces.

Why these fries work

Healthier than deep-fried. These fries are oven-baked instead of deep-fried, which reduces oil while still delivering a crunchy texture when prepared correctly.

They become truly crispy in the oven. With a few key techniques — the right cut, an hour in cold water, a light starch coating, and high-temperature baking — you can achieve a crisp exterior without frying.

Three dipping sauces add big flavor. The recipe includes Toasted Marshmallow Creme, Grainy Honey Mustard, and a Spicy Roasted Tomato Aioli, each offering a different flavor profile that pairs beautifully with the sweet, caramelized fries.

Prepping for crispy fries

Keep the fries thin. Aim for about 1/4-inch thickness. Narrow strips bake evenly and crisp more readily than thick wedges.

How to cut them. Slice a sweet potato lengthwise into 1/4-inch slabs, then stack and cut into long 1/4-inch sticks. Consistent sizing ensures even cooking.

Soak to remove starch. Place the cut fries in a large bowl of water and refrigerate for at least an hour (or overnight). This step removes excess surface starch and helps the fries crisp up. After soaking, dry thoroughly on paper towels.

The secret: starch coating

Coating the dried strips with a light dusting of starch is the trick. Use cornstarch, tapioca starch, or potato starch. Place the fries in a large zip-top bag, add about 4–6 teaspoons of starch, seal and shake until each piece has a thin coating. Too much starch will leave an off taste, so use sparingly.

Use only a little oil. Transfer the starch-coated fries to a bowl and add about 2 tablespoons of olive oil. Toss gently to distribute a light coating over the fries; you only need enough oil to help the starch crisp.

Arrange the fries for baking

Don’t overcrowd the pans. Line two baking sheets with parchment and lightly spray to prevent sticking. Space the fries so air can circulate; if they touch, they’ll steam and stay soft instead of crisping.

Bake to perfection

High oven temperature is essential. Preheat to 425°F. Lower temperatures produce limp fries; higher temps risk burning. Aim for golden-brown edges with a few darker spots for flavor.

Flip halfway through. Turn the fries once using a thin metal spatula so both sides brown evenly.

Let them rest briefly in the oven. When the fries are done, turn off the oven, open the door halfway and let the trays sit for about 10 minutes to help the exterior firm up.

Salt after baking. Do not salt before baking, as salt draws out moisture and will make the fries soggy. Sprinkle coarse sea salt right after they come out of the oven.

Three dipping sauces

These sauces are indulgent and enhance the fries in different ways. Each is easy to prepare and full of flavor.

Toasted Marshmallow Creme: Toast marshmallows under the broiler until charred and slightly melted, then combine with warm heavy cream, cinnamon and nutmeg. Beat until smooth; serve slightly warm so it remains dip-friendly.

Grainy Honey Mustard: Blend Dijon mustard, stone-ground mustard, mayonnaise, honey and a pinch of cinnamon until smooth. This bright, tangy sauce complements the sweet potato’s natural sweetness.

Spicy Roasted Tomato Aioli: Roasted Roma tomatoes, red onion, garlic and thyme add depth. Purée with chipotle in adobo, Tabasco and mayonnaise for a smoky, spicy aioli that pairs beautifully with the fries.

Follow these simple steps and you’ll transform humble sweet potato strips into crispy, crunchy fries worthy of serving alongside burgers, salads, or as a stand-alone snack. The extra prep—soaking, drying, a light starch dusting and careful spacing—makes all the difference.

Other side dishes to try:

Grilled Smoky Sweet Potato Rounds

Grilled Potatoes and Onions in Foil

Roasted Veggies with Garlic and Herbs

Prosciutto Wrapped Roasted Asparagus Bundles

Candied Rainbow Carrots with Orange-Maple Syrup

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