Sup Bawang Merah Prancis Herby

Bahan-bahan (6 porsi)

• 6 tablespoons salted butter
• 6 medium shallots, thinly sliced
• 1 yellow onion, thinly sliced
• 2 cloves garlic, minced or grated
• 2 tablespoons fresh thyme leaves
• 1 tablespoon chopped fresh sage
• 1 teaspoon honey or brown sugar
• 2 tablespoons all-purpose flour
• 1 cup dry white wine, such as Pinot Grigio or Sauvignon Blanc
• 2 quarts low sodium chicken or vegetable broth
• 1 tablespoon Worcestershire sauce
• 2 bay leaves
• 1 pinch black pepper
• 6 slices french bread
• 1 cup shredded Gruyère cheese
• 1/2 cup crumbled blue cheese