Preheat the oven to 425F.
Wash the butternut squash, cut in half and remove the seeds.
Cut the garlic bulbs in half and cut the red onion into large chunks.
Place the butternut squash on a baking sheet, add the garlic cloves into the well of the butternut squash and place the onion on the baking sheet.
Drizzle everything with olive oil. Season with salt, pepper, cinnamon, paprika, and nutmeg.
Bake in the oven for 20 mins to toast the spices and then cover with aluminum foil for another 30 mins until fork tender.
Remove from the oven and scoop out the pulp from the butternut squash into a large bowl or pot. Squeeze the garlic into the pot and add the onion.
Using an immersion blender, pour 1 cup of broth at a time until you