Costco French Onion Soup Recipe

Costco French Onion Soup is a convenient yet gourmet-tasting delight that can be recreated easily at home. This soup combines caramelized onions, rich broth, and cheesy toppings for a flavor-packed meal that’s as comforting as it is delicious.

Why This Recipe Is a Must-Try

• Quick and easy: With a few simple ingredients, you can prepare this soup without much effort.
• Rich and flavorful: Caramelized onions and high-quality cheese make this dish unforgettable.
• Perfect for any occasion: Whether it’s a cozy dinner or a special gathering, it fits the mood.
• Budget-friendly: You can replicate the Costco experience at a fraction of the cost.
• Customizable: Adjust the recipe to your preferences with ease.

What is Costco French Onion Soup Recipe?

Costco French Onion Soup is a rich and savory soup made with caramelized onions, a robust broth, and a layer of melted cheese served over toasted bread for an indulgent, comforting dish.

Costco French Onion Soup Recipe Ingredients

• 4 large yellow onions, thinly sliced
• 4 cups beef broth
• 2 cups chicken broth
• 1/4 cup dry sherry or white wine (optional)
• 2 tablespoons unsalted butter
• 2 tablespoons olive oil
• 1 tablespoon all-purpose flour
• 1 teaspoon sugar
• 1 teaspoon Worcestershire sauce
• 1 teaspoon dried thyme
• Salt and freshly ground black pepper, to taste
• 6 slices of baguette, toasted
• 2 cups shredded Gruyère or Swiss cheese

Step-by-Step Instructions to Prepare Costco French Onion Soup Recipe

Step 1: Prepare the onions

• Thinly slice the onions evenly.
• Heat butter and olive oil in a large pot over medium heat.

Step 2: Caramelize the onions

• Add sliced onions to the pot and sprinkle with sugar and a pinch of salt.
• Cook for 25-30 minutes, stirring occasionally, until the onions are deeply golden and caramelized.

Step 3: Deglaze and thicken

• Stir in the flour to coat the onions.
• Pour in the sherry or wine, scraping up browned bits from the bottom of the pot.

Step 4: Simmer the broth

• Add beef broth, chicken broth, Worcestershire sauce, and thyme.
• Simmer the soup for 20 minutes, allowing the flavors to meld. Season with salt and pepper to taste.

Step 5: Assemble and broil

• Preheat your broiler and ladle the soup into oven-safe bowls.
• Top each bowl with a slice of toasted baguette and a generous amount of shredded cheese.
• Broil for 2-3 minutes until the cheese is melted and bubbly.

What to Serve Costco French Onion Soup

1. Pair with a simple salad: A crisp green salad complements the soup’s richness.
2. Add extra bread: Toasted baguette slices are perfect for dipping.
3. Include roasted vegetables: Serve alongside roasted veggies for a complete meal.
4. Top with fresh herbs: Garnish with parsley for a fresh pop of color and flavor.

Expert Tips for Mastering Costco French Onion Soup

1. Slice onions evenly: This ensures uniform caramelization and prevents burning.
2. Take your time: Slow cooking the onions is key to developing their deep flavor.
3. Use oven-safe bowls: Ensure your bowls can withstand the broiler’s heat.
4. Select quality cheese: Gruyère or Swiss provides the best melt and flavor.
5. Toast the bread well: Well-toasted baguette slices hold up better under the cheese and broth.

Variations of Costco French Onion Soup

1. Vegetarian version: Use vegetable broth instead of beef and chicken broth.
2. Add a kick: Sprinkle in red chili flakes for a touch of heat.
3. Experiment with cheese: Try provolone or mozzarella for a unique twist.
4. Include mushrooms: Add sautéed mushrooms for an earthy flavor boost.
5. Make it creamy: Stir in a splash of heavy cream for a richer texture.

How to Store Leftovers Costco French Onion Soup?

1. Refrigerate in an airtight container: Store without bread and cheese for up to 4 days.
2. Freeze for long-term storage: Pour cooled soup into freezer-safe containers and freeze for up to 3 months.

How to Reheat Costco French Onion Soup Leftovers?

1. Stovetop method: Warm the soup over medium heat until heated through.
2. Microwave option: Heat individual portions in a microwave-safe bowl, stirring occasionally.
3. Broil fresh topping: Add fresh bread and cheese, then broil until bubbly for a fresh finish.

Nutrition Value (per serving)

• Calories: 320
• Protein: 11g
• Carbohydrates: 27g
• Fat: 17g
• Fiber: 3g
• Sodium: 780mg

FAQs

How do I caramelize onions perfectly for French onion soup?

To caramelize onions perfectly, cook them slowly over medium-low heat in a mixture of butter and oil. Stir occasionally, allowing the natural sugars to develop and brown evenly. Adding a pinch of sugar can help speed up the caramelization process without compromising flavor.

What type of cheese is best for French onion soup?

Gruyère cheese is the traditional choice for French onion soup because it melts beautifully and has a nutty, rich flavor. Alternatively, Swiss or provolone cheese can be used for a similar result.

Can I make French onion soup ahead of time?

Yes, French onion soup can be made ahead of time. Prepare the soup base and refrigerate it for up to 4 days. When ready to serve, reheat the soup, add toasted bread and cheese, and broil until bubbly.

How do I keep the bread from getting soggy in French onion soup?

To prevent the bread from getting soggy, toast it until it’s very crisp before placing it on the soup. A well-toasted slice will hold up better under the melted cheese and hot broth.

Final Words

Costco French Onion Soup is an effortless way to bring comfort food to your table. With its rich broth, sweet caramelized onions, and cheesy topping, this soup is bound to become a favorite. Follow these steps for a perfect dish every time.

More Recipe

• Longhorn French Onion Soup
• Zydeco Sauce

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