Position oven rack about 5 inches from broiler; preheat broiler.Advertisement
Cut the rind and pith off each grapefruit with a sharp knife. Cut each fruit into 4 rounds, about 1/2 inch thick.
Place the slices in a large baking pan. Top each with some brown sugar, dot with butter and sprinkle with a pinch of cinnamon and nutmeg.
Broil the grapefruit until bubbling and starting to brown, 6 to 8 minutes. Drizzle pan juices over each serving.
1 fruit, 1 other carbohydrate, 1/2 fat