01 - Set the oven to 425°F and line a large baking sheet with parchment paper.
02 - In a large bowl, toss the cubed butternut squash with olive oil, maple syrup, cinnamon, salt, and black pepper until evenly coated.
03 - Spread the coated squash in a single layer on the prepared baking sheet.
04 - Roast for 30 to 35 minutes, stirring once halfway through, until the squash is tender and golden brown.
05 - Remove from oven, transfer to a serving dish, and garnish with fresh parsley or toasted pecans if desired. Serve warm.