||Bring a pan of salted water to a boil for cooking the spaghetti. Once boiling add the pasta and begin to cook. Meanwhile in a large frying pan over a medium heat add the butter and allow to melt..
||Add the finely chopped garlic to the melted butter and a good pinch of chilli flakes. Gently fry until fragrant..
||Add the cooked mussels and simmer them gently in the butter to heat through. Add a grind of black pepper and a tiny bit of salt (the mussels are already salty so don't add a lot). Check on the pasta..
||Stir the mussels so that they are coated in the butter garlic and chilli sauce evenly. Turn down the heat to low..
||Drain off the spaghetti once nice and el dente, so it still has a good bite. Add the drained pasta into the frying pan with the mussels and using tongs gently toss everything together. Add the parsely and a touch more pepper. Toss until every strand is coated in the butter sauce..
||Serve up immediately and enjoy! :).