1. Follow the instructions for Halved, roasted squash on the savory side.
2. When the squash is cool enough to peel, simply place the flesh it in a bowl, mash it with butter and salt and serve.
It's also delicious mashed with maple syrup, orange juice, smoked paprika, salt and butter to taste, or pureed with a standard or immersion blender (make sure it's cooled first!) with milk, butter and a little bit of ginger.