Steps
1. Heat the olive oil in a pot over medium heat.
2. Add the chopped onion and garlic, sauté until translucent.
3. Add the mixed mushrooms and cook until they release their moisture and start to brown.
4. Pour in the vegetable broth and bring to a simmer.
5. Stir in the heavy cream, thyme, and rosemary, and let it simmer for another 5 minutes.
6. Season with salt and pepper to taste.
7. Use an immersion blender to blend the soup until smooth.
8. Garnish with fresh parsley before serving.