01 - Preheat the oven to 425°F. Line a large baking sheet with parchment paper.
02 - In a large bowl, toss the butternut squash cubes with olive oil, maple syrup, salt, pepper, and cinnamon if using, until evenly coated.
03 - Spread the coated squash in a single layer on the prepared baking sheet.
04 - Roast for 30 to 35 minutes, turning once halfway through, until the squash is tender and caramelized at the edges.
05 - Transfer to a serving dish, garnish with fresh herbs and toasted nuts if desired, and serve warm.