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