Melt your butter until it foams in a large pot. Then add your diced onions and garlic. Slowly stir these until the garlic and onions soften. Then add your mushrooms. Saute the mushrooms until they are golden brown, then add your salt, rosemary, and thyme. Saute for another 30 seconds, then add your chicken broth.

Cook for about an hour and then serve.

Enjoy!