Heat a large pan and cook the mince until it starts to brown a little
Add the olive oil, onion, garlic and thyme. Saute until the onion is translucent
Add the tomatoes, dried herbs, bay leaf, tomato puree, chilli powder, stock cube and pepper. Add more salt only if required as the stock may have enough salt. Bring to the boil, reduce and let it simmer for an hour to an hour and a half.
Add about a cup of warm water if the sauce becomes too thick. This will also depend on how long you are cooking your sauce. You should have a rich, thick sauce. The longer the sauce is cooked the better
If the sauce is too acidic add some sugar.
When the sauce is almost cooked , add in your cream. Boil the spaghetti and mix into the sauce. Mix in half the parmesan cheese and use the remaining cheese to serve. Garnish with some parsley and serve