Creamy Turkey Meatball Mushroom Soup Recipe

Name: Creamy Turkey Meatball Mushroom Soup Recipe
Ingredients: 1 cup, packed, torn sourdough (½-inch pieces); ¼ + 1 cup heavy whipping cream, divided; 1 pound ground turkey; 1 egg + 1 egg yolk; 1 cup roughly chopped parsley, plus more for optional garnish; 1 + 1 + 1 teaspoons kosher salt, divided; ¼ cup grated Parmesan, plus more for optional garnish; 1 cup orzo; 1 + 7 tablespoons unsalted butter, divided; 2 pounds mixed mushrooms, roughly chopped; 1 tablespoon fresh thyme, plus 1 sprig for simmering in the soup; 4 garlic cloves, grated; 5 cups mushroom or vegetable stock