Side Dishes
America's Test Kitchen sweet potato fries recipe delivers restaurant-quality crunch without the oil overload—thanks to their signature double-frying technique. 🔥 The secret lies in two quick frying sessions that transform starchy sweet potatoes into golden, crispy fries with a tender interior, while keeping them lighter than traditional versions.
I've tested countless methods, and this one consistently delivers perfect texture every time.
What sets these apart is the two-step frying process: first at a lower temperature to cook through, then a second fry at higher heat to achieve that signature shatteringly crisp exterior.
The soaking step before frying prevents sogginess while enhancing crispiness—no special equipment required beyond a deep fryer or heavy skillet. This method works equally well for air fryers or ovens if you prefer a lighter approach.
By the end, you'll have crispy, caramelized fries with just the right amount of oil—no greasy aftermath. The flavor is naturally sweet with a subtle earthiness, making them perfect as a side dish or snack.
They stay crispy for hours when served immediately, so timing is key for maintaining that ideal texture.
Whether you're serving them at a dinner party or enjoying a casual snack, these fries bring restaurant-quality results to your home kitchen. The best part? You can customize the seasoning—try smoked paprika, garlic powder, or a sprinkle of cayenne for extra kick. Let's get started on making these perfect fries!
Ingredients for america's test kitchen sweet potato fries
Two pounds of sweet potatoes and a few kitchen staples transform into restaurant-quality fries with perfect crunch.
| Ingredient | Amount | Notes |
|---|---|---|
| Sweet Potatoes 🍠 | 2 lbs | Orange-fleshed, uniform size |
| Vegetable Oil 🫒 | 2 cups | High smoke point preferred |
| Diamond Crystal Kosher Salt 🧂 | 1 ½ tbsp | For seasoning and soaking |
| Granulated Sugar 🍚 | 1 tbsp | For soaking solution |
| Smoked Paprika 🌶️ | 1 tbsp | For post-fry seasoning |
| Garlic Powder 🧄 | 1 tsp | For post-fry seasoning |
| Ground Black Pepper 🌶️ | ½ tsp | Freshly ground preferred |
| Cayenne Pepper 🔥 | ¼ tsp | Adjust for heat preference |
| Unsalted Butter 🧈 | ½ cup | Melted for finishing |
| Fresh Parsley 🌿 | ¼ cup | Chopped for garnish |
The sweet potatoes are non-negotiable—orange-fleshed varieties like Jewel or Beauregard deliver that signature caramelized sweetness. Whole Foods or Trader Joe's carry the best selection, but any grocery store's produce section will work. Look for firm, unblemished tubers—smaller ones (about 6-8 oz each) fry more evenly. If you can't find sweet potatoes, regular potatoes work in a pinch, but they won't have the same rich flavor. Pre-cut fries save time, but cutting your own ensures uniform size for even cooking—the secret to that restaurant-quality texture. Use a mandoline for perfect slices if you're feeling fancy.
No high-smoke-point oil? Avocado or peanut oil works just as well as vegetable oil, but avoid olive oil—it burns too easily. The soaking solution of salt and sugar might seem odd, but it's what prevents soggy fries and boosts that caramelized crust. Skip the sugar if you're watching carbs, but trust me—it's worth the extra minute. For seasoning, smoked paprika gives that signature ATK flavor, while cayenne adds just enough kick. Fresh parsley isn't essential, but it adds a bright pop of color that makes these fries look (and taste) like they came from a high-end kitchen. The butter at the end? That's where the magic happens—it melts into the hot fries for a silky finish.
These fries are best served immediately, but if you need to hold them, keep them in a 200°F oven for up to 20 minutes—they'll stay crispy. For make-ahead prep, par-cook the fries and freeze them dry before the second fry. Reheat in the oven at 425°F for 8-10 minutes. The soaking solution can be made ahead and stored in the fridge for up to 3 days. Portion the seasoning mix in small containers so you can sprinkle it on fresh fries anytime. Leftovers? They're rare, but if you have any, they reheat beautifully in the air fryer at 375°F for 3-4 minutes.
Why You'll Love This Recipe
- No-Fuss Prep: I swear by this recipe because it’s actually simple—just slice, soak, and bake. No peeling, no fancy cuts, and the sweet potatoes hold their shape like magic.
- Caramelized Crunch Magic: That sugar and smoked paprika mix? It turns these fries into a crispy, slightly sweet, smoky dream. The outside gets this perfect golden crackle while staying tender inside—trust me, you’ll want seconds.
- Game for Any Meal: Slap these on a burger, toss them in a salad, or serve them as a standalone snack. They reheat like a champ too, so I keep a batch in the freezer for lazy nights when I forget to plan.
- Budget-Friendly Crunch: Sweet potatoes are cheap, and this recipe stretches them far. Plus, the kosher salt and sugar are pantry staples, so you’re not breaking the bank for flavor. My wallet and taste buds win.
Step-by-step instructions for america's test kitchen sweet potato fries
Here's how to achieve that perfect double-fried crunch with minimal oil—crispy outside, tender inside every time!
🍳 Step 1: Prep and Soak the Sweet Potatoes
Peel the 2 lbs sweet potatoes and cut them into ¼-inch thick sticks using a mandoline or sharp knife. I like to keep them uniform in size so they cook evenly. Transfer them to a large bowl and toss with 1.5 tbsp Diamond Crystal kosher salt and 1 tbsp granulated sugar. This creates a flavorful soaking solution that enhances the texture and taste.
Add enough cold water to cover the sweet potatoes by about 1 inch. Let them soak for 30 minutes—this step removes excess starch that can make the fries gummy. Stir occasionally to keep them submerged. After soaking, drain well in a colander and pat completely dry with paper towels. Any moisture left will cause oil splatter when frying.
🔥 Step 2: First Fry at Low Temperature
Heat 1 cup vegetable oil in a deep skillet or Dutch oven to 325°F—this is crucial for the first fry. Use a thermometer to monitor the temperature precisely. Add the sweet potatoes in a single layer (work in batches if needed) and fry for 8-10 minutes, stirring occasionally, until they're soft but not browned. You're not looking for color yet—just tenderizing the potatoes.
Drain the fries on a wire rack set over a baking sheet. This allows air circulation to keep them crisp while they cool slightly. The rack also prevents soggy bottoms from sitting in their own moisture. Let them rest for 5 minutes before the second fry—this step is non-negotiable for perfect texture.
🔥 Step 3: Second Fry for Maximum Crunch
Increase the oil temperature to 375°F—now we're going for that golden, crispy exterior. Add the cooled fries back to the hot oil and fry for 2-3 minutes, stirring constantly, until they're deep golden brown all over. The high heat in the second fry creates that irresistible crunch while keeping the inside tender.
Drain the fries on paper towels to remove excess oil. Here's the thing—don't skip this step. The fries will continue cooking from residual heat, and any oil left on them will make them greasy instead of crispy. Transfer them immediately to a serving platter while they're still piping hot.
👨🍳 Step 4: Season and Finish with Butter
While the fries are still hot, toss them with 1 tbsp smoked paprika, 1 tsp garlic powder, 0.5 tsp ground black pepper, and 0.25 tsp cayenne pepper. The heat from the fries will make the spices cling perfectly. Melt 0.5 cup unsalted butter in a small saucepan over low heat until it's just melted but not browned.
Drizzle the melted butter over the hot fries and toss gently to coat. The butter adds richness and helps create a glossy finish. Garnish with 0.25 cup chopped fresh parsley right before serving—this adds a fresh pop of color and brightness that balances the smoky, spicy flavors. Serve immediately while they're at their crispest!
Pro Tips For Making America'S Test Kitchen Sweet Potato Fries
- PREP THIN STRIPS: Cut the sweet potatoes into even ¼-inch strips—no thicker, no thinner. I learned this the hard way when I rushed and ended up with some undercooked centers. Use a sharp knife or mandoline for consistency, and resist the urge to make them too wide.
- SALT BEFORE FRIZZING: Toss the raw strips with ½ teaspoon kosher salt per pound right after cutting. This seasoning gets locked in during the first fry, so they’re never bland. (Yes, even if you’re impatient like me—wait for the oil to hit 325°F first.)
- WATCH THE FIRST FRY: The first fry at 325°F is where the magic happens—don’t walk away. After 12 minutes, they should be tender but not brown. If the oil splutters like a firework show, lower the heat slightly. Overcrowding the pot will steam them instead of fry them.
- REST BEFORE SECOND FRY: Spread the fries on a rack (not a towel) for 10 minutes after the first fry. This lets moisture evaporate so they crisp up properly in the second round at 375°F. I used to skip this, and my fries always came out soggy—don’t make my mistake.
Perfect pairings for this america's test kitchen sweet potato fries
Crispy Toppings
Add a sprinkle of crumbled feta cheese just before serving—its tangy flavor cuts through the sweetness beautifully. I like to use 2 tbsp crumbled feta per serving for that perfect salty contrast.
For extra crunch, top with toasted pecans or crushed pork rinds, both of which add a satisfying texture without overpowering the fries. 🌟
Dipping Sauces
A classic garlic aioli made with ½ cup mayonnaise, 1 minced garlic clove, 1 tsp lemon juice, and a pinch of salt elevates these fries to new heights.
For a lighter option, whip up a quick spicy honey mustard by mixing 2 tbsp Dijon mustard, 1 tbsp honey, and ½ tsp cayenne pepper. Both pair perfectly with the smoky-sweet flavor of the fries.
Protein Pairings
Serve alongside a grilled chicken breast or pulled pork sandwich for a hearty meal. The crispy fries complement the smoky flavors of pulled pork wonderfully, while the juicy chicken adds a lighter protein option.
For a vegetarian spread, pair with black bean tacos or a spinach and feta salad to balance the richness of the fries.
Beverage Pairings
A cold Mexican lager like Modelo Especial or Pacifico cuts through the richness of the fries beautifully. For a non-alcoholic option, try a sparkling limeade made with 1 cup sparkling water, 2 tbsp lime juice, and 1 tbsp honey.
The bubbles help cleanse your palate between bites of crispy, buttery fries. 🍺
Sweet Contrasts
Balance the savory-sweet fries with a dark chocolate-dipped strawberry or a vanilla bean ice cream sandwich. The cool, creamy sweetness contrasts perfectly with the warm, crispy fries. For a lighter dessert, serve with a lemon sorbet to refresh your palate after each bite.
Meal Prep Pairings
Prep these fries ahead of time and store them in an airtight container at room temperature for up to 2 hours before reheating. Pair them with pre-cooked grilled shrimp or rotisserie chicken for a quick weeknight meal.
You can also assemble a build-your-own fry bar with toppings like avocado slices, pickled jalapeños, and sour cream for a fun, interactive dining experience.
Nutrition facts
Frequently asked questions
Why do these sweet potato fries need two frying sessions?
The double-frying technique creates that signature restaurant-quality texture! The first fry at 325°F cooks the potatoes through without browning, while the second fry at 375°F achieves that perfect golden crunch. This two-step process ensures crispiness without making the inside mushy.
Can I make these fries in an air fryer instead of deep-frying?
For an air fryer version, toss the dried sweet potato sticks with 1 tbsp oil and 1 tsp smoked paprika, then air fry at 400°F for 12-15 minutes, shaking the basket every 5 minutes. The first 8 minutes at 375°F will cook them through, then increase to 400°F for the final 5-7 minutes to crisp. This mimics the double-fry effect with much less oil!
What's the secret to keeping these fries crispy after cooking?
Three things matter most: drain thoroughly on paper towels after frying, serve immediately while piping hot, and keep them warm in a 200°F oven if holding for more than 10 minutes. Never stack them—they'll steam and lose crispiness. For extra insurance, sprinkle with cornstarch before the second fry.
Can I use regular potatoes instead of sweet potatoes?
Yes, but the flavor and texture will differ! Regular potatoes will be less sweet and more starchy. If substituting, increase the soaking time to 45 minutes and reduce sugar in the soak to ½ tbsp to prevent excess browning. Russet potatoes work best for a closer texture match.
How do I store leftover sweet potato fries?
Store in an airtight container at room temperature for up to 2 hours, or refrigerate for 3-4 days. For best texture, reheat in an air fryer at 375°F for 3-4 minutes or oven at 425°F for 8-10 minutes. Freeze for up to 1 month—just thaw and reheat as above. Never microwave, or they'll turn soggy!