Chop the bacon into lardons and finely dice the onion. Place both in a pan and fry until the onions are golden.
Cook pasta in a seperate pan of boiling water.
Chop the courgette in to batons and add to the onions and bacon. Add the mushrooms and mustard, and cook gently for a further 5 mins.
Add creme fraiche and cooked drained pasta to all other ingriedients, stir for a minute until the pasta is covered with sauce.
Serve with crusty bread and sprinkle with grated cheese.
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