Prepare a medium-hot grill, or preheat the broiler and position an oven rack 2 or 3 inches from the heating element.
Mix in a small bowl:
Brush the butter mixture over both sides of:
Grill or broil until firm, about 4 minutes each side, taking care not to burn the shells, especially the claws. They do not turn red as other crabs do. Serve with: