Add the oil, prawns and peppers to a large frying pan, season with a little salt and stir-fry over a high heat for about a minute. Add the garlic and fry until the prawns are cooked through.
Add the chilli sauce (if using) and mix well. Pour in the cream and cook until the sauce has slightly thickened, then add the pasta to warm through.
Remove from the heat and fold in the shredded basil. Season to taste and serve immediately.
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