Heat a pan, and add butter, garlic, and sliced onions. Sauté till they becometranslucent.
Now add the chopped mushroom, salt, and pepper. Sauté them till all the water from the mushroom is evaporated.
Close the lid so the water dries up quickly.
Add the vegetable stock/chicken broth.
Add the herbs and bring them to a boil.
Switch off the oven and let it cool down for some time.
Use an electric blender or mixer to make a purée of the cooked mushrooms.
Again, switch on the oven and transfer the purée to the same pan, add your heavy cream now, and give it a good stir.
Garnish the soup with some butter-fried sliced mushrooms and heavy cream.