Soften the squash. (Place whole squash in oven at 325 for 30 minutes)
Peel and cut squash to 1-inch or so cubes.
Sauté onion on low heat in a large saucepan with olive oil. Add salt, cumin, and herbs. Stir slowly until onion becomes translucent.
Add the water, bouillon cube, and squash. Let simmer for about 20 minutes, until squash becomes very soft.
Stir in the soy milk. Puree everything until creamy (immersion blender or transfer to regular blender in small portions). Add salt and pepper to taste.
Serve with vegan sour cream or coconut cream.