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