Combine squash, onions, and butter in a large microwave safe bowl. Cover and microwave on high for 4 minutes; peel squash.
Stir in broth and cook on high until squash is tender, about 20 to 25 minutes.
Transfer squash mixture into a blender; cover and hold the lid down with a potholder and pulse a few times before leaving on to blend. Transfer pureed mixture back into the microwave safe bowl.
Add cream, salt, and pepper; microwave on high until heated through, about 3 to 4 minutes. Season with nutmeg, cloves and cinnamon to taste.
Butternut Soup · Dinner Match Lab | Dinner Match Lab