STEAM: Fill large pot with ¾ inch of water. Place a steam basket in pot and bring to a boil. Place thawed Crab in basket; reduce heat, cover and steam for about 5 minutes, until crab is heated through.
SAUTÉ: Start with serving-sized pieces of Crab in the shell, or out. Melt butter or oil in a pan, stir in Crab and sauté lightly for 3–5 minutes, until heated through. When sautéing other ingredients, add Crab during last 5 minutes of cooking.
GRILL: Place Crab (legs and/or clusters) on well-oiled grill a few inches above hot coals for 5 minutes, until heated through.