Grilled sweet potatoes are a cozy, smoky treat that’s easy to make and perfect for any season. I love how the grill caramelizes their natural sweetness, making them a great side or snack. Serve them hot off the grill with a sprinkle of sea salt!
Introduction
I first started grilling sweet potatoes a few years ago when I wanted a simple side that felt both comforting and a little special. Most recipes call for roasting or boiling, but grilling adds this wonderful smoky caramelization that you just can’t get in the oven. Over time, I figured out a few tricks to get the slices tender inside but nicely charred on the outside without drying out. It’s all about the right thickness and keeping an eye on the grill temperature. I love serving these alongside grilled meats or even just a fresh salad for a quick weeknight meal. They’re sweet, savory, and have a satisfying texture that my whole family enjoys. Plus, they’re so easy to throw together when you want something healthy but still delicious. If you’ve never grilled sweet potatoes before, this recipe will quickly become a go-to in your kitchen.
What You'll Need
Approximately 8 slices per potato, 4 servings
- 2 large sweet potatoes, washed and sliced into 1/2 inch rounds
- 2 tablespoons olive oil
- 1 teaspoon sea salt
- 1/2 teaspoon black pepper
- Optional: 1 teaspoon smoked paprika or cinnamon for extra flavor
How To Do It
Step 1
Start by washing and slicing your sweet potatoes into 1/2 inch thick rounds. This thickness is key because thinner slices can fall apart or burn quickly, while thicker slices take too long to cook through. Make sure the slices are even so they cook uniformly. Pat them dry with a paper towel to remove excess moisture, which helps the oil and seasoning stick better and promotes better caramelization on the grill.
⏱ Time: 10 minutes
✓ Doneness: Slices should feel dry on the surface and be evenly cut for consistent grilling
Step 2
In a large bowl, toss the sweet potato slices with olive oil, sea salt, black pepper, and any optional spices like smoked paprika or cinnamon. The oil not only prevents sticking but also helps the natural sugars caramelize when grilled, creating that delicious charred flavor. Don’t skip the salt—it enhances the sweetness and rounds out the flavor. Make sure each slice is evenly coated for the best results.
⏱ Time: 5 minutes
✓ Doneness: Slices should be lightly and evenly coated with oil and seasoning
Step 3
Preheat your grill to medium heat, about 375°F to 400°F. This moderate temperature cooks the sweet potatoes through without burning the outside. If you’re using a charcoal grill, wait until the coals are covered with white ash. For gas grills, preheat with the lid closed for 10-15 minutes. A clean, well-oiled grill grate will help prevent sticking and give you those nice grill marks.
⏱ Time: 10-15 minutes
✓ Doneness: Grill surface is hot but not smoking excessively, ready for cooking
Step 4
Place the sweet potato slices directly on the grill grates. Arrange them in a single layer without overlapping to ensure even cooking. Close the lid and let them cook undisturbed for about 6-8 minutes. This step is important because moving them too soon can cause sticking or tear the slices. You want to develop good grill marks and caramelization on the bottom before flipping.
⏱ Time: 6-8 minutes
✓ Doneness: Edges start to brown and grill marks appear on the bottom side
Step 5
Flip the sweet potato slices carefully using tongs or a spatula. Grill the other side for another 6-8 minutes with the lid closed. Keep an eye on them to avoid burning. The slices should become tender when pierced with a fork but still hold their shape. If you notice flare-ups or charring, move slices to a cooler part of the grill.
⏱ Time: 6-8 minutes
✓ Doneness: Slices are tender through and have grill marks on both sides
Step 6
Once cooked, transfer the sweet potatoes to a serving plate. Taste and adjust seasoning with a little extra sea salt or a drizzle of olive oil if desired. Let them rest for a couple of minutes to allow the residual heat to finish softening the slices. This resting step enhances the texture and flavor.
⏱ Time: 2-3 minutes
✓ Doneness: Slices are soft but not mushy, with a pleasant smoky aroma
Step 7
Serve the grilled sweet potatoes warm as a side dish or snack. They pair beautifully with grilled meats, fresh salads, or even topped with a dollop of sour cream or yogurt for extra creaminess. I also love sprinkling fresh herbs like parsley or cilantro for a bright finish. Enjoy them right away for the best texture and flavor.
⏱ Time: Immediate
✓ Doneness: Served warm with a balance of smoky and sweet flavors
Step 8
To add a little twist, try brushing the grilled sweet potatoes with a honey-lime glaze right after grilling. Mix honey, lime juice, and a pinch of chili powder for a sweet and tangy kick. Brush it on while the slices are still hot so it soaks in nicely. This adds a fresh layer of flavor that’s especially nice in summer.
⏱ Time: 5 minutes
✓ Doneness: Glaze is shiny and slightly sticky on the surface
Step 9
If you want to prep ahead, you can slice and season the sweet potatoes a few hours before grilling. Keep them covered in the fridge and bring to room temperature before placing on the grill. This helps the slices cook evenly and reduces grilling time. Just be sure to pat them dry again if they release moisture while resting.
⏱ Time: Variable
✓ Doneness: Slices are seasoned and ready to grill without excess moisture
Pro Tips
Slice sweet potatoes evenly to ensure uniform cooking.
Uneven slices cook at different rates, causing some pieces to burn while others remain undercooked. Consistent thickness allows all slices to char and soften evenly, giving you that perfect balance of crispy edges and tender centers.
Preheat the grill properly before adding potatoes.
A hot grill sears the potatoes on contact, locking in moisture and creating those attractive grill marks. If the grill is too cool, the potatoes will stick and cook unevenly, resulting in a less appealing texture and flavor.
Don’t overcrowd the grill grate.
Crowding traps steam between slices, which prevents caramelization and causes soggy potatoes. Leaving space allows air to circulate and promotes even cooking and browning.
Use tongs to flip the slices gently.
Sweet potatoes can be delicate when grilled. Using tongs carefully prevents breaking or tearing the slices, ensuring they stay intact and look appealing when served.
Add seasoning after grilling for a fresher flavor.
While seasoning before grilling is important, a final sprinkle of salt or herbs after grilling brightens the flavors and adds a fresh contrast to the smoky notes.
Let the grilled sweet potatoes rest briefly before serving.
Resting allows residual heat to finish cooking the slices gently and helps the texture settle, making them more tender and flavorful.
Experiment with flavor variations like honey-lime glaze.
Adding a sweet or tangy glaze right after grilling enhances the natural sweetness and adds complexity. It’s a simple way to customize the dish for different occasions.
Common Mistakes to Avoid
Cutting slices too thin or too thick
Why it happens Many home cooks underestimate how slice thickness affects cooking time and texture, often slicing unevenly out of haste or lack of experience.
Fix Use a sharp knife and a steady hand to cut 1/2 inch thick slices. If slices are too thin, they’ll burn; too thick and they won’t cook through. Consistency is key for even grilling.
Grilling over too high heat
Why it happens It’s tempting to crank the heat to speed up cooking, but high heat can char the outside while leaving the inside raw.
Fix Preheat the grill to medium heat (375°F to 400°F) and cook slowly. This allows the potatoes to soften properly and develop an even char without burning.
Skipping oil or seasoning
Why it happens Sometimes cooks want to reduce fat or think potatoes don’t need seasoning before grilling.
Fix Toss slices in olive oil and salt before grilling to prevent sticking, promote caramelization, and enhance flavor. Light seasoning makes a big difference.
Flipping slices too often
Why it happens Inexperienced grillers may flip repeatedly to check doneness, which prevents proper searing.
Fix Let the slices cook undisturbed for 6-8 minutes per side to develop good grill marks and caramelization. Only flip once.
Not drying slices before oiling
Why it happens Moisture on the surface can cause oil to slide off and prevent browning.
Fix Pat slices dry with paper towels before tossing with oil and seasoning. This helps the oil adhere and promotes better charring.
Variations
Spicy Grilled Sweet Potatoes
Add a pinch of cayenne pepper or chili powder to the olive oil mixture before grilling for a spicy kick. This variation adds warmth and depth without overpowering the natural sweetness. Great for those who like a little heat.
Note: Be careful not to add too much spice before grilling as it can burn; adjust seasoning after cooking if needed.
Herbed Grilled Sweet Potatoes
Mix chopped fresh rosemary, thyme, or parsley into the olive oil before tossing with the sweet potatoes. The herbs infuse a fresh, earthy aroma that complements the smoky grill flavor perfectly.
Note: Add fresh herbs after grilling as well to maintain vibrant color and flavor.
Honey-Lime Glazed Sweet Potatoes
After grilling, brush the slices with a glaze made from honey, lime juice, and a pinch of salt. This creates a tangy-sweet finish that’s bright and refreshing, perfect for summer meals or BBQs.
Note: Apply glaze immediately after grilling while slices are hot for best absorption.
Grilled Sweet Potato Wedges
Cut the sweet potatoes into wedges instead of rounds for a chunkier side. Wedges have a different texture—crispy edges with a soft center—and are great for dipping in sauces or spreads.
Note: Increase grilling time slightly to ensure wedges cook through fully.
Smoky Maple Grilled Sweet Potatoes
Add a drizzle of pure maple syrup mixed with smoked paprika before grilling for a sweet and smoky flavor combo. This variation is perfect for fall and winter dinners.
Note: Maple syrup can burn easily; apply lightly and watch the grill heat.
Nutrition
Per Serving:
Nutritional values are estimates and may vary based on specific ingredients used.
Storage & Tips
Room Temperature
Grilled sweet potatoes can be kept at room temperature for up to 2 hours if covered loosely with foil or a clean cloth. Beyond that, bacteria growth increases, so refrigerate promptly.
Refrigerator
Store leftovers in an airtight container in the fridge for up to 4 days. The texture may firm up slightly; reheat gently to soften or enjoy cold in salads.
Freezer
Freeze grilled sweet potatoes in a single layer on a baking sheet, then transfer to freezer bags for up to 2 months. Thaw overnight in the fridge before reheating to preserve texture.
Reheating
Reheat in a skillet over medium heat with a splash of olive oil to restore crispiness, or microwave covered for 1-2 minutes. Avoid overheating to prevent drying out.
Make Ahead
Slice and season sweet potatoes up to 24 hours ahead and store in the fridge. Bring to room temperature before grilling to ensure even cooking. This saves prep time on grilling day.
FAQ
Can I grill sweet potatoes without slicing them?
Grilling whole sweet potatoes takes much longer and can be tricky to cook evenly. Slicing into 1/2 inch rounds or wedges ensures they cook through quickly and get those nice grill marks. If you prefer whole, wrap tightly in foil and grill over indirect heat for about 45-60 minutes.
What if my grill tends to stick?
Make sure your grill grate is clean and preheated well. Oil the grate lightly with a paper towel dipped in oil before adding the potatoes. Also, toss the slices thoroughly in oil before grilling to prevent sticking and tearing.
Can I use a grill pan indoors instead of an outdoor grill?
Yes! A grill pan on the stovetop works well for this recipe. Preheat the pan over medium-high heat and cook the slices similarly, flipping once. You won’t get the smoky flavor, but you’ll still get nice char marks and caramelization.
How do I know when the sweet potatoes are done?
They’re done when tender all the way through and have nice grill marks on both sides. Test with a fork or skewer—it should slide in easily without resistance, but the slices should still hold their shape.
Can I make this recipe vegan and gluten-free?
Absolutely! This recipe is naturally vegan and gluten-free as long as you use pure olive oil and seasonings without additives. It’s a healthy, allergy-friendly side dish.
What are good dipping sauces to serve with grilled sweet potatoes?
Try sour cream mixed with fresh herbs, a tangy yogurt dip, or even a smoky chipotle mayo. These add creaminess and complement the sweet, smoky flavor of the potatoes nicely.
Can I add other vegetables to the grill with the sweet potatoes?
Yes, vegetables like bell peppers, zucchini, and asparagus grill well alongside sweet potatoes. Just cut them to similar sizes and adjust cooking times as needed to avoid over or undercooking.
Is it better to peel sweet potatoes before grilling?
I prefer to leave the skin on because it adds texture, nutrients, and holds the slices together better on the grill. Just be sure to wash them thoroughly. If you don’t like the skin, you can peel them before slicing.
Final Thoughts
I hope you give these grilled sweet potatoes a try—they’re such a simple, tasty way to enjoy a classic vegetable. Let me know how they turn out and what your favorite seasoning twist is!
