Bring a large saucepan of salted water to the boil. Begin cooking the spaghetti according to packet instructions.
Heat a large frying pan up over a medium high heat and spray in a liberal amount of cooking oil. Once hot add the prawns and begin to fry. Season well with pepper and a pinch of salt.
Cook the prawns for around two minutes then add in the crushed garlic and samphire. Spray in more oil. Toss everything together.
Add a good glug of the pasta water to the pan with the prawns. Turn down the heat and bring to a gentle simmer.
Once the pasta is cooked drain it off then add it in with the prawns and samphire once almost all the pasta water has reduced. Stir everything together then add the green pesto. Toss until the pasta is coated evenly. Serve up and enjoy! :)
