Rach's "Shut-the-Door Good" Mushroom Soup + Garlic Bread

Name: Rach's "Shut-the-Door Good" Mushroom Soup + Garlic Bread
Cuisine: American
Ingredients: 1 medium loaf crusty French bread; 1 stick of butter; very soft; almost melted; 4 cloves garlic; finely chopped or grated; ½ cup grated Gruyere cheese; ½ cup grated Parmigiano-Reggiano cheese; ½ cup minced parsley; Salt and pepper; 2 tablespoons EVOO; 2 tablespoons butter; 1 ½ pounds cremini mushrooms; wiped and very thinly sliced; Salt and black pepper; 2 large shallots; finely chopped; 3 cloves garlic; chopped; 1 tablespoon fresh thyme; 1 teaspoon ground sage; 3 tablespoons flour; ½ cup Marsala or white wine; 1 quart beef bone broth or stock or mushroom stock for vegetarian preparation; 1 cup heavy cream; 1 teaspoon white pepper; Finely chopped chives; to serve