Cook the noodles according to the packet instructions
While they are cooking, heat the oil in a wok or large saucepan and briefly fry the garlic and chilli. Stir in the peanut butter and coconut milk to make a loose paste before adding the stock.
Bring to a simmer and add the prawns, spring onion and soy sauce. Cook until the prawns are pink, then add the cooked and drained noodles.
Return to a simmer and finally add a squeeze of lime juice and the fresh coriander.
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