Cut grapefruit in half crosswise.
Loosen sections with a sharp knife or grapefruit spoon.
Place 1/4 tsp (1 ml) butter in middle of each half.
Sprinkle each half with 1/2 tsp (2 ml) granulated sugar replacement, cinnamon and nutmeg.
Broil 4 in. (10 cm) from heat for 6 to 8 minutes.