Place face down on parchment-paper-lined baking sheet and bake for an hour.
Add other ingredients (except for kale, salt, and pepper) to a large saucepan on medium heat. (You can start with less cream/soy milk and add more if you want.)
Combine and simmer for 10-15 min. Leave lid off and stir occasionally, allowing sauce to reduce to your preference.
Add kale just before serving so it cooks down but doesn't lose color, then season to taste with salt and pepper.
Remove squash from peel onto your plate and top with sauce and optional sliced kale leaves for garnish.