These grilled sweet potatoes are my go-to for a smoky, sweet side dish that feels like a warm hug. The grill brings out their natural sugars perfectly. Great for casual dinners or weekend BBQs!
Introduction
I first started grilling sweet potatoes on a whim during a summer BBQ, and it quickly became a family favorite. What I love about this version is how the grill enhances their natural sweetness with a smoky, caramelized crust. Unlike baking, grilling adds a subtle char that gives each bite a little extra depth. The trick I learned is to slice the potatoes evenly and brush them with olive oil — this helps prevent sticking and promotes that perfect grill mark. Also, seasoning them simply with sea salt lets their flavor shine without overpowering. The result is tender, slightly crisp-edged slices that pair beautifully with just about any main dish. I’ve tried all kinds of toppings and spices, but honestly, sometimes just a sprinkle of salt and a squeeze of lemon is all you need. If you’re looking for an easy side that feels special yet takes minimal effort, this grilled sweet potato recipe is a winner. Plus, it’s great for any season—whether you’re firing up the grill in summer or using a grill pan indoors on a chilly evening. I hope you enjoy it as much as my family does!
What You'll Need
Approximately 8 slices per sweet potato, serves 4
- 2 large sweet potatoes, washed and sliced into 1/2-inch thick rounds
- 2 tablespoons olive oil
- 1 teaspoon sea salt
- 1/2 teaspoon freshly ground black pepper
- Optional: 1/2 teaspoon smoked paprika or chili powder for extra flavor
How To Do It
Step 1
Start by washing and drying your sweet potatoes thoroughly. Slice them into even 1/2-inch thick rounds to ensure they cook evenly on the grill. Uneven slices can lead to some pieces being undercooked while others get too charred. Using a sharp knife helps keep the slices uniform and intact. This step is key for achieving tender, creamy centers with a nice smoky crust.
⏱ Time: 10
✓ Doneness: Slices are consistently cut, about 1/2 inch thick, smooth edges without breaking apart
Step 2
Brush each sweet potato slice generously with olive oil on both sides. This prevents sticking to the grill grates and helps the surface caramelize beautifully. Don’t skimp on the oil—it’s what creates those gorgeous grill marks and locks in moisture. Once oiled, sprinkle sea salt, pepper, and optional smoked paprika evenly over the slices for added flavor.
⏱ Time: 5
✓ Doneness: Slices glisten evenly with oil and seasoning is visible but not clumpy
Step 3
Preheat your grill to medium-high heat (about 400°F). If using a charcoal grill, wait until the coals are covered with white ash. This temperature ensures the sweet potatoes cook through without burning on the outside. A too-hot grill will char them quickly but leave the inside underdone.
⏱ Time: 10
✓ Doneness: Grill grates are hot enough to sizzle when touched with a drop of water
Step 4
Place the sweet potato slices directly on the grill grates. Arrange them in a single layer without overlapping to allow even heat exposure. Close the grill lid to trap heat and smoke, which helps cook them faster and imparts that lovely smoky flavor.
⏱ Time: 2
✓ Doneness: Slices lay flat and spaced evenly on the grill surface
Step 5
Grill the sweet potatoes for about 5-7 minutes on the first side. Resist the urge to move them too soon; this allows the sugars to caramelize and create those signature grill marks. If you try to flip too early, they might stick or tear. Look for a golden-brown color with some char lines before flipping.
⏱ Time: 7
✓ Doneness: Golden grill marks appear and slices release easily from the grates
Step 6
Flip the slices gently using tongs and grill the other side for another 5-7 minutes. The sweet potatoes should become tender when pierced with a fork but still hold their shape. The second side will get slightly less caramelization but will cook through evenly.
⏱ Time: 7
✓ Doneness: Slices are tender and fork pierces easily without falling apart
Step 7
Remove the sweet potatoes from the grill and transfer to a serving platter. While still warm, sprinkle a little extra sea salt or your favorite fresh herbs for brightness. This step enhances the flavor and adds a fresh contrast to the smoky sweetness.
⏱ Time: 3
✓ Doneness: Slices look glossy and slightly crisp at edges, ready to serve
Step 8
Serve immediately while warm, either as a side dish or a snack. These grilled sweet potatoes pair wonderfully with grilled meats, salads, or even on their own with a dollop of sour cream or yogurt. The warmth brings out their natural sugars and makes them irresistibly comforting.
⏱ Time: 2
✓ Doneness: Dish is warm and aromatic, inviting to eat
Step 9
If you want to add a finishing touch, try drizzling a little honey or balsamic glaze over the top right before serving. This adds a subtle tangy sweetness that complements the smoky flavor beautifully. Just be careful not to add too early or the sugars can burn.
⏱ Time: 2
✓ Doneness: Glaze is evenly drizzled and glossy without pooling
Pro Tips
Slice the sweet potatoes evenly to about 1/2 inch thickness.
Uniform slices ensure they cook through at the same rate and develop consistent caramelization. Thinner slices risk burning, while thicker ones may stay undercooked inside.
Brush the slices generously with olive oil on both sides before grilling.
Oil prevents sticking and promotes Maillard reactions, which create flavorful grill marks and a crispy crust while keeping the inside moist.
Preheat your grill to medium-high heat before placing the sweet potatoes on it.
Proper grill temperature ensures the sweet potatoes cook evenly without burning. Too hot causes charring; too low results in pale, undercooked slices.
Don’t flip the slices too early—wait for grill marks to form.
Allowing the sugars to caramelize undisturbed helps create a nice crust and prevents the potatoes from sticking or tearing when flipped.
Close the grill lid while cooking.
Trapping heat and smoke inside helps cook the sweet potatoes faster and infuses them with smoky flavor, enhancing the overall taste.
Season simply with sea salt and pepper to let natural flavors shine.
Over-seasoning can mask the sweet potatoes’ inherent sweetness. Minimal seasoning complements their flavor and balances the smoky notes.
Add a drizzle of honey or balsamic glaze after grilling for extra flavor.
These finishing touches add a sweet-tart contrast that elevates the dish without overpowering the smoky, caramelized sweet potatoes.
Common Mistakes to Avoid
Cutting sweet potatoes unevenly
Why it happens Many cooks underestimate how slice thickness affects cooking time and texture, leading to inconsistent results.
Fix Use a sharp knife and aim for uniform 1/2-inch slices. If unsure, use a mandoline slicer for consistent thickness to ensure even grilling.
Grilling at too high heat
Why it happens Impatience or misunderstanding grill temp causes cooks to crank heat, hoping to speed things up, but it burns the outside.
Fix Preheat grill to medium-high (around 400°F) and monitor heat. Adjust vents or burners to maintain steady temperature for even cooking.
Not oiling the slices enough
Why it happens Some skip oiling to reduce fat or assume natural sugars prevent sticking, which leads to tearing.
Fix Brush both sides with olive oil generously. This creates a barrier that prevents sticking and promotes caramelization.
Flipping too soon
Why it happens Eager cooks often try to flip early to check doneness, which causes sticking and uneven grill marks.
Fix Wait until grill marks form and slices lift easily before flipping. Patience here improves texture and appearance.
Skipping seasoning
Why it happens Assuming sweet potatoes don’t need salt or spice can result in bland taste.
Fix Always season with sea salt and pepper before grilling. Optional spices like smoked paprika add complexity.
Variations
Spicy Grilled Sweet Potatoes
Add cayenne pepper or chili flakes to the seasoning mix for a bold spicy kick. This variation pairs well with grilled meats or as a snack with a cooling dip like yogurt. The heat complements the natural sweetness beautifully.
Note: Adjust spice level to taste; high heat can scorch spices, so apply them just before grilling or midway through cooking.
Herb-Infused Grilled Sweet Potatoes
Mix chopped fresh rosemary, thyme, or sage into the olive oil before brushing on the slices. This adds an earthy, aromatic flavor that’s wonderful for fall or holiday meals. Herbs also bring freshness and color.
Note: Add herbs just before grilling to avoid burning; alternatively, sprinkle fresh herbs on after cooking for a brighter taste.
Maple-Glazed Grilled Sweet Potatoes
Brush sweet potatoes with a mixture of olive oil and pure maple syrup for a sticky, sweet glaze. This version is perfect for brunch or a sweet-savory side. The maple syrup caramelizes on the grill for extra depth.
Note: Apply glaze during the last few minutes of grilling to prevent burning sugars.
Grilled Sweet Potato Wedges
Cut the sweet potatoes into wedges instead of rounds for a chunkier, hand-held side. Wedges have more surface area for crispy edges and are great for dipping. They take slightly longer to cook but offer a satisfying texture.
Note: Increase grilling time by 3-5 minutes and turn wedges frequently to ensure even cooking.
Stuffed Grilled Sweet Potatoes
After grilling, scoop out some flesh and mix with cheese, herbs, or cooked veggies, then stuff back and grill briefly to melt toppings. This makes an impressive and hearty side or light main course.
Note: Ensure sweet potatoes are fully cooked before stuffing; grill stuffed potatoes over indirect heat to melt toppings without burning.
Nutrition
Per Serving:
Nutritional values are estimates and may vary based on specific ingredients used.
Storage & Tips
Room Temperature
Grilled sweet potatoes can be left at room temperature for up to 2 hours when covered loosely to prevent drying out. Beyond that, bacteria growth increases, so refrigeration is recommended.
Refrigerator
Store leftover grilled sweet potatoes in an airtight container for up to 4 days. They might lose some crispness but reheat well. For best flavor, reheat gently and add a splash of olive oil or butter to restore moisture.
Freezer
Freeze grilled sweet potato slices in a single layer on a baking sheet, then transfer to a sealed freezer bag for up to 3 months. To prevent freezer burn, remove as much air as possible. Thaw overnight in the fridge before reheating.
Reheating
Reheat on a stovetop grill pan or in the oven at 350°F for 10-15 minutes until warmed through. Avoid microwaving if possible, as it can make them soggy. A light brush of oil before reheating revives their texture.
Make Ahead
You can slice and oil the sweet potatoes 1 day ahead and store them in the fridge covered tightly. Season and grill just before serving for maximum freshness and flavor.
FAQ
Can I grill sweet potatoes without oil?
While you can grill sweet potatoes without oil, it’s not recommended because the oil prevents sticking and helps create those delicious caramelized grill marks. Without oil, the slices may stick to the grates and tear, making the texture less appealing.
What if my sweet potatoes are too thick or thin?
Thickness affects cooking time and texture. Too thin slices can burn quickly and become mushy, while thick slices may not cook through evenly. Aim for about 1/2 inch thickness for the best balance of tenderness and caramelization.
Can I use a grill pan if I don’t have an outdoor grill?
Absolutely! A grill pan on the stovetop works well for this recipe. Preheat it over medium-high heat and cook the slices similarly, turning once grill marks form. Just watch for hot spots and avoid overcrowding.
How do I know when the sweet potatoes are done?
They’re done when the slices are tender enough to pierce with a fork but still hold their shape. The exterior should have golden grill marks and a slightly crisp edge without being burnt.
Can I prepare the sweet potatoes ahead of time?
Yes, you can slice and oil the sweet potatoes a day ahead and keep them refrigerated in an airtight container. Season and grill just before serving for the freshest taste and best texture.
What are some good seasonings besides salt and pepper?
Smoked paprika, chili powder, garlic powder, or fresh herbs like rosemary and thyme work wonderfully. Just be careful not to overpower the natural sweetness of the potatoes.
Is it better to peel sweet potatoes before grilling?
I usually grill them unpeeled because the skin adds texture and nutrients. Just wash them thoroughly. If you prefer, you can peel them first, but they might be more delicate and prone to sticking.
How do I prevent sweet potatoes from sticking to the grill?
Besides brushing with olive oil, make sure your grill grates are clean and well-oiled before cooking. Also, avoid moving the slices too soon; wait for grill marks to form before flipping.
Final Thoughts
Give these smoky grilled sweet potatoes a try and see how easy it is to elevate a simple side. I’d love to hear how yours turn out—don’t forget to share your photos!
