Barbecue Sweet Potato Recipe: Smoky Char With Caramelized Sweetness

Smoky barbecue meets sweet potato in this dish that brings the grill to your side plate. The charred edges and caramelized sweetness create a perfect balance of flavors.

This recipe transforms simple ingredients into a restaurant-quality side with minimal effort. The barbecue rub adds depth, while the natural sweetness of the potatoes shines through.

Ingredients for Barbecue Sweet Potato

Simple pantry spices and fresh sweet potatoes create this smoky, caramelized side dish.

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The sweet potatoes must be firm and unblemished—organic from Whole Foods or your local farmers market ensures optimal flavor and texture. Smoked paprika is non-negotiable for that authentic barbecue depth; Penzeys offers exceptional quality. Avoid pre-cut potatoes, as their starch content releases prematurely, resulting in a mushy texture rather than caramelized edges.

No smoked paprika? Chipotle powder at half the amount provides similar smokiness. Brown sugar can be replaced with coconut sugar for a deeper molasses note. Fresh garlic and onion can substitute the powders—use 3 minced cloves and 1 small minced onion. Apple cider vinegar is irreplaceable for acidity, but lemon juice works in a pinch.

Store unpeeled sweet potatoes in a cool, dark place for up to 2 weeks. Once peeled and cut, submerge in water and refrigerate for 24 hours max. The spice blend keeps in an airtight container for 6 months—perfect for doubling and saving for future use.

Step-by-Step Instructions for Barbecue Sweet Potatoes

Master the technique for achieving smoky, caramelized wedges with perfect char and balance.

Step 1: Prepare and Season the Sweet Potatoes

Begin by peeling and cutting the 2 lb Sweet Potatoes into even wedges about 1-inch thick. Uniform pieces ensure even cooking and consistent charring. I like to leave the skin on for texture, but peeling is fine if you prefer a smoother finish.

In a large bowl, toss the sweet potato wedges with the 2 tbsp Olive Oil until evenly coated. Then add the 1 tsp Smoked Paprika, 1 tsp Garlic Powder, 1 tsp Onion Powder, 1 tbsp Brown Sugar, 1 tsp Sea Salt, 0.5 tsp Black Pepper, and 0.25 tsp Cayenne Pepper. Toss again until every wedge is thoroughly seasoned—the spices should cling to the oil-coated surface.

Step 2: Grill Over Direct Heat for Char

Preheat your grill to medium-high heat (about 400°F). Clean and oil the grates to prevent sticking. Arrange the sweet potato wedges directly over the heat source, leaving space between each piece for proper air circulation.

Grill for 6-8 minutes per side until deep char marks appear and the wedges begin to soften. Resist the urge to move them too soon—you want solid grill marks before flipping. Close the lid between flips to maintain consistent heat and speed up cooking.

Step 3: Glaze and Caramelize

Once the wedges have developed good char, reduce heat to medium and move them to indirect heat if your grill has a cooler zone. Brush the wedges generously with a mixture of the 1 tbsp Maple Syrup and 1 tbsp Apple Cider Vinegar—this creates a sticky, tangy glaze.

Cook for an additional 5-7 minutes, turning occasionally, until the glaze has caramelized and the sweet potatoes are tender when pierced with a fork. The vinegar balances the sweetness while the maple syrup deepens the caramelization.

Step 4: Finish and Garnish

Transfer the grilled sweet potatoes to a serving platter. The glaze should be glossy and slightly sticky, with visible char marks. Sprinkle with the 0.25 cup Fresh Cilantro just before serving—the fresh herb adds a bright contrast to the smoky-sweet flavors.

Let the wedges rest for 2-3 minutes before serving. This allows the glaze to set slightly and the flavors to meld. The cilantro should be the final touch, added right as you bring the dish to the table to preserve its vibrant color and fresh aroma.

Troubleshooting Perfect Results

Uneven Char Marks

If your wedges have pale spots, your grill likely has hot spots. Rotate them 90 degrees halfway through each side’s cooking time. I also check my grill’s heat distribution with a ThermoWorks Instant Read—it’s a game-changer for consistent results. 🌡️

Soggy Instead of Crisp

This usually happens when the grill isn’t hot enough. Ensure your grill reaches 400°F before adding the sweet potatoes. Also, avoid crowding the grates—leave at least ½ inch between pieces for proper air circulation.

Glaze Burning

The maple-apple cider mix can burn if applied too early. Wait until you see good char marks before brushing. If flames flare up, move wedges to indirect heat immediately. Keep a spray bottle of water handy for quick flare-up control.

Undercooked Centers

If the outside chars but centers stay firm, the wedges might be too thick. Cut them to 1-inch thickness maximum. For stubborn pieces, finish in a 375°F oven for 5-10 minutes after grilling.

Spices Not Sticking

This means your sweet potatoes need more oil. Toss with 2 tbsp Olive Oil first, then add spices. The oil creates a sticky surface for the rub to cling to. I sometimes add an extra 1 tsp oil if the wedges look dry. 🔥

Overly Sweet Flavor

Balance the sweetness by increasing the Apple Cider Vinegar to 1.5 tbsp. The acidity cuts through the sugar. You can also add a pinch of Cayenne Pepper to introduce a spicy contrast that complements the dish.

Frequently Asked Questions