01 - Preheat the oven to 400°F. Line a large baking sheet with parchment paper.
02 - Toss the sweet potato cubes with olive oil, cinnamon, nutmeg, salt, and pepper in a large bowl until evenly coated.
03 - Spread the coated sweet potatoes in a single layer on the prepared baking sheet.
04 - Roast the sweet potatoes for 20 minutes, then gently toss and scatter pecan halves over them.
05 - Drizzle maple syrup evenly over the sweet potatoes and pecans.
06 - Return the baking sheet to the oven and roast for an additional 10 minutes until the sweet potatoes are tender and caramelized and the pecans are toasted.
07 - Serve warm, optionally garnished with extra pecans.