Roast the mushrooms in the oven or sauté in a hot skillet with olive oil until golden. Set aside.
Boil potatoes in salted water until tender. Drain and set aside.
In a large pot, sauté onion, carrots, and garlic over medium heat until softened. Add all spices and herbs and stir for 1 minute.
Add broth, cooked potatoes, roasted mushrooms, apple cider vinegar, nutritional yeast, and cream alternative. Stir together and simmer for approximately 20 minutes.
Blend partially or fully depending on your preferred texture. Season to taste and serve hot.