1 onion, sliced
3 garlic cloves, chopped
1 tsp dried chilli flakes
1 x 400g can chopped tomatoes
375g linguine pasta
500g mussels, beards removed and washed
Heat the oil in a large frying pan and cook the onions over a medium heat for 6 to 8 minutes, until softened. Add the garlic and chilli and stir for 1 minute. Pour in the tomatoes, season with sea salt and bring to the boil. Simmer for 5 minutes.
Cook the linguine in a pan of salted boiling water, according to packet instructions.
When there are 3 minutes of the cooking time remaining, take a ladleful of the pasta's cooking water and add to the tomato sauce.
Bring the sauce to the boil, add the mussels and cook, stirring, until the mussels have opened.
Drain the linguine and toss into the sauce, over the heat, until the pasta is well coated. Serve immediately with a drizzle of olive oil.