🇵🇹 Portuguese Onion Soup

🧂 Ingredients (Serves 4–6)

• 4 large yellow onions, thinly sliced
• 3 tbsp unsalted butter
• 1 tbsp olive oil
• 2 garlic cloves, minced
• 1 tsp sugar (helps caramelize the onions)
• ½ tsp salt
• ¼ tsp black pepper
• 1 tbsp all-purpose flour (optional, for thickening)
• ½ cup dry white wine or sherry (optional)
• 6 cups beef broth (or a mix of beef and chicken broth)
• 2 bay leaves
• 2 sprigs fresh thyme (or ½ tsp dried thyme)
• 1 baguette, sliced and toasted
• 1½ cups grated Gruyère or Swiss cheese