Put 1 medium butternut squash cut into 1½-2 inch cubes in a large baking pan or dish. Drizzle with 3 tablespoons extra virgin olive oil and sprinkle with 1 teaspoon kosher salt. Toss together until the squash is evenly coated. Bake 25 minutes, until tender.
While the squash is baking, melt 3 tablespoons butter in a small pan placed over low heat. Stir in 1 thinly sliced garlic clove, ½ teaspoon crushed red pepper, and ¼ teaspoon ground nutmeg. Remove from the heat and set aside.
Transfer the squash to a food processor work bowl. Add ¼ cup heavy cream and 2 tablespoons of the melted butter mixture. Pulse 30-45 seconds or until the puree is as smooth as you like.
Spoon the squash into a serving bowl and drizzle with the rest of the garlic butter. Sprinkle with the parsley and serve.
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Notes
To save time, buy prepared (peeled and diced) butternut squash. You'll need 4-5 cups. Frozen butternut squash cubes will also work in this recipe.
No food processor? Mash the roasted squash directly in the pan with a potato masher, or use an immersion blender — texture will be slightly less smooth but still good.
The squash can be prepared up to 3 days ahead. Reserve the 2 tablespoons of garlic butter separately. Warm the squash at 325 degrees in a covered baking dish for 15-20 minutes and top with the butter before serving.
Whipped butternut squash can be frozen up to 3 months. Thaw overnight in the refrigerator.