01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, toss the sweet potato cubes with olive oil until evenly coated.
03 - Combine sugar, ground cinnamon, and sea salt in a small bowl.
04 - Sprinkle the cinnamon sugar mixture over the sweet potatoes and toss until all pieces are well coated.
05 - Spread the sweet potatoes in a single layer on the prepared baking sheet and roast for 25 to 30 minutes, turning once halfway through, until golden and tender.
06 - Serve hot, optionally garnished with extra cinnamon or chopped fresh herbs.