Classic French Onion Soup Topped With Gruyère Cheese

Ingredients

• 2 tbsp unsalted butter
• 2 large onions sliced
• 2 leeks sliced ((white and light green parts only))
• 8 oz cremini mushrooms (sliced)
• 2 cloves garlic
• 1 tbsp chopped fresh thyme
• 4 tsp all-purpose flour
• 1/2 cup dry white wine
• 4 cups sodium-reduced vegetable broth
• 3/4 tsp sea salt
• 1/2 tsp freshly ground pepper
• 8 1/2 inch thick round slices of baguette (toasted)
• 1 cup shredded Gruyère cheese
• 2 tbsp sliced fresh chives
• fresh thyme sprigs (garnished )