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Instructions
Step 1: Caramelize the Onions
. In a large pot, melt the butter with olive oil over medium heat.
. Add the sliced onions and sugar, stirring well to coat.
. Cook the onions slowly, stirring occasionally, for 30-40 minutes, until golden brown and caramelized.
. Tip: Adjust the heat as needed to avoid burning.
Step 2: Add Garlic and Flour
. Stir in the minced garlic and cook for 1-2 minutes, until fragrant.
. Sprinkle the flour over the onions, stirring well to coat.
. Cook for an additional 2 minutes to remove the raw flour taste.
Step 3: Add the Broth
. Gradually pour in the beef broth, stirring constantly to deglaze the pot.
. Scrape up any browned bits from the bottom for extra flavor.
. Bring the soup to a simmer and let it cook for 20-30 minutes to allow the flavors to meld.
Step 4: Prepare the Bread
. While the soup simmers, toast the baguette slices under the broiler until golden brown.
. Set aside for assembly.
Step 5: Assemble and Broil
. Preheat the broiler.
. Ladle the soup into oven-safe bowls.
. Place a toasted baguette slice on top of each bowl and sprinkle generously with grated Gruyère cheese.
. Place the bowls under the broiler for 2-3 minutes, or until the cheese is melted and bubbly.
Step 6: Serve
. Carefully remove the bowls from the oven.
. Serve the soup hot and enjoy the comforting, cheesy goodness!
Tips for Success
. Caramelize Slowly: Taking the time to properly caramelize the onions is the key to this soup’s rich flavor.
. Use Quality Ingredients: High-quality Gruyère or Swiss cheese and a robust beef broth will elevate the dish.
. Make Ahead: Prepare the soup base ahead of time and reheat before assembling for serving.
Serving Suggestions
Pair this soup with a crisp green salad or roasted vegetables for a light, balanced meal. For an indulgent pairing, serve it alongside a glass of full-bodied red wine or crusty artisan bread.
Why This Recipe Is a Keeper
French Onion Soup is the ultimate comfort food, blending rustic simplicity with gourmet flavors. The caramelized onions add a natural sweetness, the beef broth delivers a robust depth, and the gooey Gruyère topping pulls it all together for a dish that feels both indulgent and wholesome.
Don’t lose this recipe—it’s a guaranteed favorite for any occasion.
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