1.
Preheat oven to 350 degrees Fahrenheit. Fill a large roasting pan with 1/2 inch of water.
2.
Place squash, cut side down, into the roasting pan. Cover tightly and cook until fork tender, about one and a half hours. Transfer to a baking sheet lined with a cooling rack. While still warm, remove seeds and peel. Alternatively, peel butternut squash before roasting.
3.
Turn the broiler to high and set an oven rack closest to the heat source. Brush squash with onion caramel (recipe follows) and broil until golden, about two minutes. Brush again with onion caramel and continue to broil until just beginning to char. Lightly season with salt before serving.
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