Preheat oven to 425ºF.
Put squash cubes, onion, and garlic cloves on a large-rimmed baking sheet. Sprinkle with salt, pepper and drizzle olive oil over top. Toss together so all the vegetables are evenly coated.
Roast for 35 to 40 minutes, stirring halfway through so the vegetables roast evenly.
Transfer roasted vegetables to a medium/large soup pot or dutch oven. We love our Le Creuset pot. Add chicken broth and heat to a simmer. Let it simmer for about 5 minutes.
Blend it with an immersion blender (or in batches with a countertop blender) until smooth.
Stir in the coconut/evaporated milk. Add a little more salt & pepper, to taste.
When serving, top with a little fresh thyme, nutmeg, a drizzle of crème friache and a couple croutons or a slice of crusty bread.