Thaw frozen crab legs in the refrigerator overnight or under cold running water for 20 to 30 minutes
Rinse the crab legs under cold water
Fill a large pot with water and add salt
Bring the water to a boil
Place a steamer basket in the pot if using one
Add the crab legs to the pot or steamer basket
Cover the pot with a lid
Steam for 5 to 7 minutes if thawed
Steam for 8 to 10 minutes if frozen
Or boil for 4 to 6 minutes if thawed
Or boil for 6 to 8 minutes if frozen
Remove the crab legs with tongs
Drain well
Serve with melted butter, lemon wedges, and seasoning if desired