01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - In a large mixing bowl, whisk together maple syrup, olive oil, melted butter, cinnamon, nutmeg, sea salt, and black pepper until well combined.
03 - Add the cubed butternut squash to the bowl and toss thoroughly to ensure each piece is evenly coated with the glaze.
04 - Spread the coated squash cubes in a single layer on the prepared baking sheet.
05 - Roast in the preheated oven for 25 to 30 minutes, stirring halfway through, until the squash is tender and caramelized.
06 - Transfer the roasted squash to a serving platter and garnish with chopped fresh parsley and toasted nuts, if using.