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Classic French Onion Soup Recipe

Classic French Onion Soup Recipe - Easy Family Meal

Before diving into the joys of crafting a classic French onion soup, let’s chat about what goes splendidly with this dish. 
Picture it: a hot, steamy bowl of that rich, savory soup, topped with gooey cheese and nestled beside a crisp side salad or some crusty bread. It’s the ultimate comfort food experience.
A light arugula salad with a squeeze of lemon can cut through the richness and elevate every spoonful. Or, if you’re feeling indulgent, serve it alongside a charcuterie board. 
Cheese, cured meats, and pickled veggies create an impressive display that would make any gathering feel special.
I’ve also found that a side of grilled cheese sandwiches—yes, the classic childhood favorite—pairs beautifully, providing a delightful contrast to the soft, caramelized onions.
Now, let’s get into why this recipe is a staple in my kitchen.
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Prep Time 20 minutes
Cook Time 2 hours
Total Time 2 hours 20 minutes
Servings: 5
Course: Side Dish
Cuisine: French
Calories: 639
Ingredients Method Notes

Ingredients
  

  • 1 tablespoon dry sherry
  • 2 tablespoons all-purpose flour
  • 3/4 teaspoon sea salt
  • 1 tablespoon canola oil
  • 1 small baguette, cut into ½-inch slices
  • 1/2 teaspoon freshly ground black pepper
  • 3 pounds Vidalia or any sweet onion variety
  • 6 cups beef stock
  • 1 teaspoon Worcestershire sauce
  • 1/2 teaspoon smoked paprika
  • 8 ounces Gruyère cheese, shredded about 2 heaping cups; preferably from Switzerland
  • 1/2 cup freshly grated Parmigiano Reggiano
  • 3/4 teaspoon granulated honey
  • 1/2 teaspoon dried thyme
  • 2 bay leaves
  • 4 tablespoons unsalted butter
  • 1 cup dry white wine
  • 1 tablespoon balsamic vinegar

Method
 

Step 1: Prepare the Onions
  1. First things first, peel and slice the onions. I usually opt for Vidalia onions because they’re sweet and make the soup even more delectable. Once sliced, melt the unsalted butter and canola oil in a large stockpot over medium heat.
    Once the butter is bubbly, toss in the onions. Stir them well and sprinkle with a hint of salt. This will coax the moisture from the onions, kickstarting their caramelization.
    It’ll take about 20-30 minutes of low and slow cooking to achieve that beautiful golden brown color.
Step 2: Caramelize Those Onions
  1. This is where the magic happens. Stir occasionally, allowing the onions to turn a deep caramel color. It’s an art to watch them transform. You might want to crank up the heat a bit after about 15 minutes to speed things along, but keep an eye out—nobody likes burnt onions!
    If they start to stick, feel free to deglaze the pan with a splash of the white wine. That’s flavor right there!
Step 3: Add Flour and Liquids
  1. Next, sprinkle the flour over the onions. This will help thicken our soup. Stir well to coat, allowing the flour to cook for a minute. Then, gradually add the beef stock, wine, and sherry. Bring it to a gentle simmer.
Step 4: Season and Simmer
  1. Now it’s time to flavor up! Toss in Worcestershire sauce, balsamic vinegar, smoked paprika, thyme, bay leaves, and honey. Each ingredient harmonizes with the others to create that unmistakable taste.
    Let it simmer for at least 30 minutes, allowing the flavors to meld and deepen. If you’ve got the time, letting it simmer longer only improves its complexity. Adjust seasoning with salt and pepper to your liking.
Step 5: Prepare the Bread
  1. While the soup is bubbling, let’s take care of the bread. Preheat your oven to 350°F (175°C) and arrange slices of baguette on a baking sheet.
    Lightly toast them in the oven until they’re crispy and beginning to brown. This will enhance their flavor and avoid mushiness when we top our soup.
Step 6: Assemble and Broil
  1. Once your soup has simmered and you’ve removed the bay leaves, it’s time for the grand assembly.
    Ladle the soup into oven-safe bowls, place a slice or two of your toasted baguette on top, and sprinkle generously with Gruyère cheese followed by a sprinkle of Parmigiano Reggiano.
    Now, place those bowls on a baking sheet and slide them under the broiler. Keep an eye on them! We're aiming for that bubbly, golden cheese that pulls with each spoonful. It should take about 2-4 minutes to reach the perfect melty state.

Notes

  • Vidalia Onions: These onions are sweet and delicious. Their natural sugars help create the deep caramelized flavor essential to this soup.
  • Butter and Oil: Using both ensures a rich taste and prevents the butter from burning. A good balance of fats is crucial for sautéing onions perfectly.
  • Beef Stock: The base flavor of our soup. Swapping it for vegetable stock will change the soup's profile but still make it tasty.
  • Wine and Sherry: Don't skip these. They contribute acidity, which balances the sweetness from the onions. They help elevate the entire dish.
  • Cheeses: Gruyère is a classic choice for French onion soup; it melts beautifully. Parmigiano Reggiano adds a necessary salty kick.
  • Seasoning: Adjusting the seasoning at the end ensures the soup has the perfect flavor profile.