There’s something magical about that perfect balance of crispy exterior and creamy interior that makes sweet potato wedges absolutely irresistible. Growing up, my grandmother would always tell us that the secret to perfect wedges wasn’t just in the cooking—it was in the patience. Little did I know that her wisdom would lead me to discover this game-changing recipe that transforms humble sweet potatoes into restaurant-quality perfection.
After countless kitchen experiments and a few disappointing batches, I finally cracked the code. These crispy sweet potato wedges paired with a luscious garlic avocado aioli have become my go-to side dish for everything from casual weeknight dinners to impressive dinner parties.
Why You’ll Fall in Love with This Recipe
The Perfect Texture Combination
These wedges deliver that coveted contrast we all crave—golden, crispy edges that give way to tender, fluffy centers. The secret lies in the soaking technique, which removes excess starch and creates the ideal foundation for that satisfying crunch.
Flavor That Packs a Punch
The seasoning blend brings together sweet paprika, garlic powder, and a hint of cayenne heat that complements the natural sweetness of the potatoes. Meanwhile, the avocado aioli adds a creamy, garlicky richness that elevates every bite.
Simple Yet Sophisticated
While the technique might seem elaborate, the ingredients are refreshingly simple. Moreover, most of the prep work happens while the potatoes soak, making this recipe more manageable than it initially appears.
Ingredients You’ll Need
Prep Time: 30 minutes
Cook Time: 30 minutes
Total Time: 2 hours
Servings: 8
For the Sweet Potato Wedges:
- 2 large sweet potatoes, scrubbed and cut lengthwise into wedges
- 1-2 tablespoons corn starch or cornflour
- 2 tablespoons olive oil
Seasoning Blend:
- 2 teaspoons sweet paprika
- 2 teaspoons garlic powder
- 1/2 teaspoon onion powder
- 1/4 teaspoon cayenne pepper
- 1/2 teaspoon red chili powder (optional)
- 2 teaspoons dried thyme
- Sea salt to taste
For the Avocado Garlic Aioli:
- 1 large ripe avocado
- 2 tablespoons whole egg mayonnaise
- 1 clove garlic, minced
- 2 teaspoons fresh lemon juice
- Sea salt to taste
Step-by-Step Instructions
Preparing the Sweet Potatoes
Begin by arranging your oven racks to the upper level of your oven. This positioning ensures optimal heat distribution for achieving that perfect crispy exterior.
Place the sweet potato wedges in a large bowl and cover completely with cold water. Allow them to soak for just over 1 hour. This crucial step removes excess starch, which is the key to achieving maximum crispiness.
Setting Up for Success
When you’re ready to bake, preheat your oven to 450°F (230°C). Next, lightly grease 2 baking sheets with nonstick cooking spray or brush them with oil. Place these baking sheets directly into the oven to preheat—this technique creates an immediate sear when the wedges hit the hot surface.
The Coating Process
Drain the wedges thoroughly and pat them dry with paper towels. The goal is to remove as much moisture as possible, so don’t rush this step.
Spoon the corn starch into a large zip-lock bag, then add the wedges. Seal the bag with some air inside and shake vigorously to ensure even coating. This method guarantees that every wedge gets perfectly dusted without creating a mess.
Seasoning and Arranging
Using tongs, transfer the coated wedges to a large bowl, shaking off any excess starch. Drizzle with olive oil and add all the seasonings except salt. Toss well to ensure every wedge is evenly coated with the flavorful spice blend.
Carefully remove the preheated baking trays from the oven. Arrange the wedges in a single layer, leaving at least 1/2-inch gaps between each piece. This spacing is crucial for proper air circulation and even browning.
The Baking Process
Bake for 15-20 minutes, then remove the trays and test the wedges with a fork. If they’re just tender, flip them over and arrange them in a single layer again. Return to the oven for an additional 5-10 minutes until they reach that perfect tender-crisp texture.
Final Crisping Technique
Turn off the oven heat and leave the door slightly ajar. Allow the wedges to rest in the residual heat for about 5 minutes. This final step removes any remaining moisture and ensures maximum crispiness.

Creating the Perfect Aioli
While the wedges rest, prepare your avocado aioli. Combine the avocado, mayonnaise, minced garlic, and lemon juice in a small food processor or magic bullet cup. Blend for 20 seconds until smooth and creamy. If needed, scrape the sides and blend for an additional 10 seconds. Season with salt to taste.
Serving Suggestions
Classic Presentation
Sprinkle the hot wedges generously with sea salt immediately after removing them from the oven. Serve alongside the creamy aioli for the ultimate flavor combination.
Elevated Serving Ideas
Consider arranging the wedges on a wooden board with small bowls of aioli scattered throughout. Additionally, you might garnish with fresh herbs like chopped chives or parsley for a pop of color and freshness.
Pairing Options
These wedges pair beautifully with grilled meats, roasted chicken, or even as a standalone appetizer for entertaining. Furthermore, they make an excellent addition to any Mediterranean-inspired meal.
Recipe Variations to Try
Spice Level Adjustments
For those who prefer milder flavors, simply omit the cayenne pepper and red chili powder. Conversely, heat lovers can double the cayenne or add a pinch of smoked paprika for depth.
Alternative Aioli Flavors
Try substituting the garlic with roasted garlic for a sweeter, more mellow flavor. Alternatively, add fresh herbs like basil or cilantro to create unique flavor profiles.
Different Potato Varieties
While sweet potatoes are the star here, this technique works wonderfully with regular russet potatoes or even butternut squash for a seasonal twist.
Make-Ahead Tips
Prep Work
The sweet potatoes can be cut and soaked up to 24 hours in advance. Simply store them in the refrigerator in their soaking water, which actually enhances the starch removal process.
Aioli Preparation
The avocado aioli can be made up to 2 hours before serving. Press plastic wrap directly onto the surface to prevent browning, then refrigerate until needed.
Reheating Instructions
If you need to reheat the wedges, place them on a baking sheet in a 400°F oven for 5-7 minutes. This method restores much of their original crispiness.
Important Notes
Essential Tips for Success
Ensuring proper spacing between wedges is crucial for even cooking. Don’t overcrowd the baking sheets, as this creates steam and prevents proper crisping.
Never skip the soaking step, as it removes excess starch and is the foundation of achieving that perfect crunch. Additionally, preheating the baking sheets creates an immediate sear that contributes to the crispy exterior.
Troubleshooting Common Issues
If your wedges aren’t getting crispy enough, increase the oven temperature by 25°F and extend the cooking time slightly. However, keep a close eye on them to prevent burning.
For wedges that are browning too quickly, move them to a lower oven rack and reduce the temperature by 25°F.

Frequently Asked Questions
Can I use frozen sweet potatoes?
Fresh sweet potatoes work best for this recipe because frozen varieties contain too much moisture. However, if using frozen, thaw completely and pat extremely dry before proceeding.
What if I don’t have corn starch?
Regular all-purpose flour can substitute for corn starch, though the results won’t be quite as crispy. Use the same amount and follow the same coating process.
How do I prevent the aioli from browning?
The lemon juice helps prevent oxidation, but for best results, make the aioli as close to serving time as possible. If preparing ahead, press plastic wrap directly onto the surface.
Can I make this recipe vegan?
Absolutely! Simply substitute the mayonnaise with a vegan alternative. The rest of the recipe remains unchanged and equally delicious.
Why is the soaking step so important?
Soaking removes excess starch from the sweet potatoes, which is essential for achieving maximum crispiness. Without this step, the wedges tend to remain soft and lack that satisfying crunch.
What’s the best way to cut the wedges?
Cut each sweet potato lengthwise in half, then cut each half into 3-4 wedges depending on size. Aim for uniform thickness to ensure even cooking.
Nutrition Information (per serving):
- Calories: 178kcal
- Carbohydrates: 22g
- Protein: 2g
- Fat: 10g
- Fiber: 5g
- Vitamin A: 12,417IU
- Potassium: 439mg