Limes: use a microplane zester and chopping board to zest the limes. Then transfer the zest into a small bowl, we need ¼ cup. Then use a knife to slice the limes in halves and juice these. Pour that into a bowl, we need a ¼ cup of lime juice also.
Prawns: start by twisting and removing the heads from the prawns, then pull their tails off and remove the shells. Then use a sharp knife down the back of each one, make a cut and then remove the digestive tract and discard. You can then rinse the prepared prawns and use paper towel to pat them dry.
Marinade: gather the marinade ingredients and then add the olive oil, chopped coriander, lime zest, lime juice, garlic powder, onion powder, dried coriander, chilli powder, cumin, paprika, salt and pepper to a small jug and use a fork to whisk to combine.
Combine: add the prawns to a medium sized bowl. Then pour the marinade over the top and use a pair of kitchen scissors to stir and cover the prawns with the Mexican sauce.
Cook: place a large heavy base saute pan on the stove top and turn the heat to high. Tip the contents of the bowl into the pan and cook the prawns. Use a wooden spoon to stir and rotate them during this time.
To serve: once the prawns are cooked, portion them into bowls with hot rice, lime wedges and chopped coriander.