Melt the butter in non stick frying pan over medium heat and cook until just bubbling.
Add the garlic and chilli, cook for one minute stirring until fragrant. Add the prawns and toss. Cook for 2-3 minutes or until prawns begin to change colour and are cooked through. Add the lime juice and zest.
Meanwhile cook the pasta in a large saucepan of salted boiling water for 10-12 minutes or until aldente. Drain, return to the pan, add the butter, salt and pepper and toss to coat.
Add to the prawn mixture and toss.Serve topped with grated parmesan and coriander.