Preheat your oven to 400 degrees Fahrenheit (200 degrees Celsius).
Carefully peel the butternut squash using a vegetable peeler. Cut it in half lengthwise, remove the seeds with a spoon, and cut it into 1-inch cubes.
In a mixing bowl, combine the melted butter, chopped rosemary, thyme, minced garlic, salt, black pepper, maple syrup (if using), and lemon juice. Whisk together until well combined.
In a large mixing bowl, add the cubed butternut squash. Pour the herb butter mixture over the squash and toss well to coat all the pieces evenly.
Spread the coated squash cubes in a single layer on a baking sheet lined with parchment paper for easy cleanup.
Place the baking sheet in the preheated oven and roast for 25-30 minutes, or until the squash is tender and golden, stirring halfway through for even cooking.
Once roasted, remove the squash from the oven. Transfer to a serving dish, sprinkle with freshly chopped parsley, and serve warm.