cream of mushroom soup recipe

Ingredients:** - 1/4 cup unsalted butter - 1 small onion, finely chopped - 2 garlic cloves, minced - 1 pound mushrooms, sliced (you can use a mix of cremini, button, or shiitake) - 1/4 cup all-purpose flour - 4 cups chicken or vegetable broth - 1 cup heavy cream - 1/2 teaspoon dried thyme - Salt and pepper to taste - Fresh parsley, chopped (for garnish)