Sweet Potato Blackstone Recipe: Charred Edges and Caramelized Sweetness

This Sweet Potato Blackstone recipe transforms humble sweet potatoes into restaurant-worthy sides with caramelized edges and smoky depth—perfect for summer cookouts or weeknight dinners. The Blackstone’s even heat ensures tender centers and crispy exteriors without burning, while basting with butter and honey unlocks next-level flavor.

I’ve refined this technique over countless grilling sessions to guarantee foolproof results every time.

What sets this recipe apart is the two-step grilling process: first, scoring the sweet potatoes to prevent cracking, then basting with melted butter and maple syrup mid-cook for a sticky, caramelized finish.

The key is patience—low and slow ensures they cook through without drying out, while high heat at the end creates those coveted charred edges. This method works for both thick slices and whole roasted sweet potatoes, giving you versatility for any meal.

By the time you’re done, you’ll have golden, tender sweet potatoes with crispy edges that practically melt in your mouth. The aroma alone will have everyone at the table asking for seconds.

Serve them as a side to burgers, grilled chicken, or even as a hearty vegetarian main with a sprinkle of fresh herbs and a drizzle of honey. The Blackstone’s cast iron surface ensures even cooking and easy cleanup, making this a game-changer for outdoor cooking.

For extra flair, top with toasted pecans, crumbled feta, or a sprinkle of smoked paprika—each addition adds a new dimension of flavor. This recipe isn’t just about the sweet potatoes; it’s about mastering the Blackstone’s heat control to create a dish that’s restaurant-quality at home. Let’s get grilling!

Ingredients for sweet potato blackstone

Twelve key ingredients transform simple sweet potatoes into Blackstone masterpieces with caramelized edges and smoky depth.

The sweet potatoes are your canvas—medium-sized with firm texture works best. Local farmers markets often have the freshest, but any grocery store with a produce section will carry them. Look for vibrant orange skin and firm, heavy potatoes—those are your telltale signs of quality. The scoring technique (cutting shallow crosshatches) is critical; it prevents cracking during cooking while allowing the butter and maple syrup to penetrate deeply. I always use organic sweet potatoes when possible, as their higher sugar content caramelizes more beautifully. For extra insurance, soak them in cold water for 10 minutes before grilling to remove any surface starch that could make them sticky on the Blackstone.

No smoked paprika? Substitute with a mix of regular paprika and a pinch of liquid smoke—it's a game-changer for that authentic smoky flavor. The maple syrup can be swapped for honey, though maple has a more complex flavor profile that pairs better with the sweet potatoes. Fresh herbs are ideal, but dried thyme and rosemary at one-third the amount will work in a pinch. If you're avoiding dairy, the feta can be omitted entirely, though it adds a lovely tangy contrast. For the pecans, walnuts or almonds make fine substitutes, though they'll have a different texture. The key is balancing sweetness and acidity—lemon juice brightens everything, so don't skip it, even if you're using honey instead of maple syrup.

Prep the sweet potatoes ahead of time—they'll keep in the fridge for 3-4 days if stored in a cool, dark place. The basting mixture (butter, maple syrup, and spices) can be made up to 2 days in advance and stored in the refrigerator. When ready to grill, bring the Blackstone to medium-high heat—this is crucial for achieving those coveted charred edges. The sweet potatoes are done when a knife slides in easily and the edges are deeply caramelized. Leftovers reheat beautifully in a 350°F oven for 15-20 minutes, though they're best enjoyed fresh off the Blackstone. For meal prep, portion the basting mixture into small containers and store separately—just reheat and brush on as needed.

Step-by-step instructions for sweet potato Blackstone masterpiece

Master the art of Blackstone cooking with these precise steps for perfectly charred sweet potatoes.

Using a sharp chef's knife, score the 2 whole large sweet potatoes lengthwise in ¼-inch deep cuts, creating ¼-inch thick slices when split. This scoring ensures even cooking and dramatic char marks. Pat them dry completely with paper towels—moisture is the enemy of perfect sear marks.

In a small bowl, combine 1.5 teaspoons Diamond Crystal kosher salt, 1 teaspoon smoked paprika, and 0.5 teaspoon ground cinnamon. Rub this mixture generously over the scored sweet potatoes, pressing it into the cuts and flesh. This seasoning blend creates the perfect balance of smoky warmth and sweet spice that defines Blackstone cooking. Let the potatoes rest at room temperature for 15 minutes while you prepare the Blackstone.

Preheat your Blackstone over medium-high heat for 10-15 minutes until it reaches 450°F. The surface should be hot enough to blister a drop of water when you flick it with your fingers. While the Blackstone heats, prepare the basting mixture by combining 0.5 cup cold cubed unsalted butter, 0.25 cup pure maple syrup, 2 tablespoons extra-virgin olive oil, and 1 tablespoon freshly squeezed lemon juice in a small saucepan.

Place the saucepan over low heat and warm the mixture, stirring constantly until the butter melts completely. Remove from heat and set aside—this basting mixture will create the signature caramelized glaze. The acidity from the lemon juice brightens the sweetness, while the maple syrup adds depth that complements the smoky char.

Carefully place the scored sweet potatoes on the preheated Blackstone, cut-side down. Cook for 8-10 minutes until the edges begin to develop deep golden-brown char marks and the flesh starts to soften. Here's the critical moment: use a pair of tongs to flip the potatoes and baste them immediately with the warm butter mixture, using a spoon to coat all surfaces.

Continue cooking for another 5-7 minutes, basting every 2 minutes with the remaining butter mixture. You'll know they're done when the flesh yields slightly to gentle pressure and the char marks are deep mahogany with visible grill lines. The potatoes should be tender enough to pierce easily with a knife but still hold their shape—overcooking will turn them mushy.

Remove the sweet potatoes from the Blackstone and transfer them to a serving platter. Finely chop the leaves from 2 sprigs fresh thyme and 2 sprigs fresh rosemary, then sprinkle them evenly over the top. The herbs add an aromatic finish that complements the smoky-sweet profile. For the final touch, scatter 0.25 cup chopped toasted pecans and 0.25 cup crumbled feta cheese over each serving.

The pecans add a satisfying crunch, while the feta provides a tangy contrast that cuts through the richness. Serve immediately while the potatoes are still piping hot, with the charred edges offering that perfect balance of smoky intensity and caramelized sweetness. The basting mixture will pool at the bottom of the platter, creating an additional sauce element that enhances every bite.

Creative variations of this dish

Smoky BBQ Twist

Swap the maple syrup for ½ cup BBQ sauce (I love Sweet Baby Ray's Original) and add 1 tbsp apple cider vinegar to the basting mixture.

Brush the scored sweet potatoes with the sauce before grilling, then baste with a mix of melted butter and extra BBQ sauce during cooking. Finish with chopped red onion and cilantro for a Texas-style flavor profile that pairs perfectly with burgers or pulled pork. 🌶️

Spiced Cinnamon Sugar Crust

Before grilling, coat the scored sweet potatoes with a mix of 2 tbsp melted butter, 3 tbsp brown sugar, and 1 tsp cinnamon. Grill them cut-side down for 10 minutes until the sugar caramelizes into a glossy crust.