Preheat your oven to 400°
Slice the butternut squash in half lengthwise and remove the seeds
Place the squash onto a parchment lined baking sheet along with the bulb of garlic, quartered yellow onion, halved apple and roughly chopped walnuts
Drizzle everything with olive oil and season generously with sea salt and black pepper
Drizzle several tablespoons of pure maple syrup over the squash and apples
Bake in a 400 degree oven until the squash is tender (50-60 minutes)
Transfer the roasted vegetables into a food processor or blender, add 3 cups of vegetable stock and blend until smooth
Add additional stock, salt, black pepper or maple syrup, if preferred
Strain the soup or reheat, if necessary
Garnish and enjoy!