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, cinnamon, salt, and black pepper until evenly coated. If desired, add maple syrup or honey and nutmeg.
03 - Spread the coated sweet potatoes in a single layer on the prepared baking sheet.
04 - Roast for 25 to 30 minutes, flipping halfway through, until potatoes are tender and golden brown.
05 - Serve immediately, garnished with a sprinkle of extra cinnamon if preferred.