Place a cup of water in the bottom of your Instant Pot. Place the steamer basket into the Instant Pot.
In a mixing bowl mix together the lime, garlic, coconut oil and curry paste so that they are well mixed.
Add everything else to the bowl and make sure the prawns are well tossed in the marinade.
Place the prawns into the steamer basket and place the lid on the Instant Pot and set the valve to sealing. Cook on the steamer function for 1 minute.
Manually release pressure, shake the prawns and serve with sprinkled cumin.