International
Slice the mushrooms and finely chop the onion and garlic.
Melt the butter in a large pot and cook the onion over medium heat for 5 minutes until soft.
Add the mushrooms and thyme and cook for 10 minutes, stirring, until their liquid has mostly evaporated; add the garlic for the last minute.
Sprinkle in the flour and stir for 1 minute, then gradually pour in the broth, stirring.
Simmer for 15 minutes, then blend until smooth, leaving a few pieces if you like.
Stir in the cream, season with salt and pepper and heat through without boiling.
Serve sprinkled with parsley.