Add the onion, mushrooms and grated carrot and saute for about 5 minutes until onion is softened.
Stir the Quorn mince into the sauteed vegetables until well combined.
Then add the garlic, vegetable stock, tinned tomatoes, tomato puree and herbs. Bring everything to the boil, turn down to simmer and then season to taste. Allow to simmer for about 10 minutes, stirring regularly.
Whilst Bolognese sauce is simmering cook spaghetti in boiling salted water as per packet instructions and then drain.
Divide the spaghetti equally between plates and then pour the sauce over the top. Serve garnished with the freshly grated Parmesan.