Heat half the oil over a medium heat. Sear the prawns for 2 minutes, then turn over and cook for 2 minutes. You may need to do this in batches. Remove the prawns and set aside.
Heat the remaining oil in the same pan. Add the garlic and chilli and cook for 2 minutes.
Add the chopped tomatoes and bring to a gentle simmer. Cook for 10-15 minutes until the sauce has thickened.
Meanwhile, bring a pan of salted water to a boil. Add the linguine and cook for 10-12 minutes until al dente. Drain and set aside until the sauce is ready.
Add the prawns back to the sauce and continue cooking until the prawns have warmed through.
Season with salt and pepper to taste
Stir the linguine through the sauce and spoon into serving bowls. Serve with lots of freshly grated parmesan.
