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1. **Caramelize the Onions:**
– In a large, heavy-bottomed pot, melt the butter and olive oil over medium heat. Add the sliced onions and toss to coat them in the butter and oil. Sprinkle the salt and sugar over the onions, and stir occasionally.
– Cook the onions over low to medium heat for about **40-45 minutes**, stirring every 10 minutes or so to ensure they caramelize evenly. The goal is to achieve a deep golden-brown color without burning the onions. Patience is key here — slow cooking will bring out the natural sweetness of the onions.
2. **Add the Garlic and Deglaze the Pot:**
– Once the onions are beautifully caramelized, add the minced garlic and cook for 1-2 minutes until fragrant.
– Next, pour in the dry white wine (if using), scraping up any browned bits stuck to the bottom of the pot. These bits are packed with flavor and will add depth to your soup. Let the wine reduce by about half, which will take about 2-3 minutes.
4. **Prepare the Toasted Baguette Slices:**
– While the soup is simmering, preheat your oven’s broiler. Slice the baguette into 1-inch thick slices, then toast them in the oven until golden brown, about 3-5 minutes. Be sure to keep an eye on them to avoid burning. Once toasted, set the slices aside.
5. **Assemble and Broil:**
– Remove the bay leaf from the soup. Ladle the hot soup into oven-safe bowls. Place the toasted baguette slices on top of the soup, and generously sprinkle with the shredded Gruyère cheese and a little Parmesan, if using.
– Place the bowls on a baking sheet and broil them in the oven for about **2-3 minutes**, or until the cheese is melted, bubbly, and golden brown. Be careful not to let the cheese burn.
#### Why You’ll Love This French Onion Soup Recipe:
– **Elegant Comfort Food:** While this soup is easy enough for a weeknight meal, it’s also impressive enough for a dinner party. Its deep, bold flavors and beautiful presentation are sure to make an impression on guests.
– **Customize to Your Taste:** While this recipe calls for Gruyère cheese, you can experiment with other cheeses like Swiss, mozzarella, or even a blend of your favorites. You can also add a dash of sherry or balsamic vinegar for a slightly different twist on the flavor profile.
#### Tips for the Best French Onion Soup:
– **Take Your Time with the Onions:** The caramelization process is what gives the soup its signature flavor, so don’t rush it! Cooking the onions low and slow will enhance their natural sweetness, making all the difference in the taste of the soup.
– **Serve with a Salad:** Pair your French Onion Soup with a simple green salad with a light vinaigrette for a complete meal.
#### Conclusion: