01 - Preheat oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, toss sweet potato cubes with olive oil, maple syrup, apple cider vinegar, salt, cinnamon, and black pepper until evenly coated.
03 - Spread the sweet potatoes in a single layer on the prepared baking sheet.
04 - Roast for 25 minutes, stirring halfway through, until tender and lightly caramelized.
05 - While sweet potatoes roast, toast pecans in a dry skillet over medium heat for 3 to 4 minutes until fragrant. Set aside.
06 - In the last 5 minutes of roasting, sprinkle toasted pecans over sweet potatoes and return to oven.
07 - Remove from oven, toss gently, and serve warm.