How to Make It
Preheat the oven to 350°. Set the squash, cut side down, on a lightly oiled baking sheet. Bake for about 45 minutes, or until soft.
In a saucepan, combine the carrots, garlic, thyme and 2 cups of water. Cover and bring to a boil, then simmer over low heat until the carrots are very tender, about 20 minutes. Transfer the contents of the pan to a food processor; puree. Scoop the squash out of its skin and puree it with the carrots. Season with salt and pepper.
Spread the puree in a buttered shallow baking dish; dot with the butter. Bake for 20 minutes, or until hot, and serve.