Preheat oven to 400°F. Season squash with salt and pepper, arrange cut side up in a 9-by-13-inch baking pan, cover tightly with aluminum foil and bake until tender when pierced with a fork, 45 minutes. Sprinkle squash with brown sugar and bake, uncovered, for 20 minutes, or until edges are browned.
Arrange squash on a serving platter; spoon any melted sugar from pan onto squash. (If sugar has hardened, add 1 Tbsp. water to loosen.) Serve hot.
Add some freshly grated nutmeg to the butter and sugar for further taste.
Nice recipe. Easy to fix and it cooks as advertised. One you can count on meal after meal.