01 - Preheat the oven to 400°F. Line a large baking sheet with parchment paper.
02 - In a large mixing bowl, toss the sweet potato cubes with olive oil, ground cinnamon, nutmeg, sea salt, and black pepper 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.
05 - Remove the baking sheet, gently toss the sweet potatoes, and scatter pecan halves evenly over them. Drizzle maple syrup over the mixture.
06 - Return to the oven and roast for an additional 10 minutes until sweet potatoes are tender and lightly caramelized and pecans are toasted.
07 - Remove from oven and serve warm, optionally garnished with extra pecans.