Portobello Mushroom Onion Soup - Master recipes

Ingredients

• 5 cups thinly sliced halved onions -
• 4 fresh thyme sprigs -
• 3 tablespoons butter, divided -
• 1-1/2 pounds sliced baby portobello mushrooms -
• 3 tablespoons brandy, optional -
• 3 garlic cloves, minced -
• 8 cups vegetable broth -
• 1 cup white wine or additional vegetable broth -
• 1/4 teaspoon pepper -
• 13 slices French bread (1/2 inch thick) -
• 13 slices provolone cheese -