Arrange the trivet in the bottom of Instant Pot and pour the waterand 1 teaspoon of salt.
Place the crab legs on top of the trivet and sprinkle with a little salt.
Secure the lid and turn to “Seal” position.
Cook on “Manual” with “High Pressure” for about 4 minutes.
Press “Cancel” and do a quick release.
Meanwhile, in a bowl, mix together the butter and garlic.
Remove the lid and transfer crab legs onto a serving platter.
Drizzle with the garlic butter and serve.