First, pour two cups of water into the steamer and bring to the boil.
Then, place your crab legs inside the steamer basket and wait for water to boil.
Once the water is boiling, place the steamer basket with the crab legs inside the steamer and set the timer for about 7 minutes.
Check that the crab legs are cooked by touching them, and if they are hot to the touch and smelling delicious, then they are ready.
When ready, remove the crab legs from the steamer, and place them on a plate.
Add some melted butter or extra virgin olive oil with a squeeze of a lemon wedge to serve, or top with garlic butter.