How To Make Costco French Onion Soup Recipe

This is the second time I’m making a Costco copycat recipe. I previously made the Costco Scalloped Potatoes Recipe, and it turned out delicious. Now, I’ll share the Costco French Onion Soup Recipe and how I made it in just a few simple steps, just like how I share my other recipes.

I love French Onion Soup recipes. The Longhorn one is my favorite so far; I made it, I guess, about three weeks ago. It’s a tasty French Onion Soup mixed with some spices inspired by the Longhorn restaurant. So far, I’ve only made copycats of French Onion Soup recipes. I love them because they are famous and delicious, but I’ll make a traditional one soon.

The Costco French Onion Soup Recipe is similar to the Longhorn one. It’s a great meal, loaded with onions, flavors, cheese, and everything else. It’s ideal for dinner. Serve a small bowl to each of your family members.

What is Costco French Onion Soup Recipe?

Costco has a very good French Onion Soup that many people love. This recipe tries to capture the essence of their version. The main ingredients are fresh onions, savory broth, and gooey melted cheese. It’s an excellent soup for dinner!

To make it, first, caramelize thinly sliced onions in butter and olive oil. Then, add minced garlic and a bit of sugar, deglaze with white wine, and reduce. Next, pour in beef broth and add chunks of crusty bread. Let it simmer, then pour the French Onion Soup into bowls of any size you desire. Top with cheese, and stick it in the oven. Ta-da! French Onion Soup as good as you can get at Costco.

Ingredients

To make this Costco French Onion Soup, you’ll need the following ingredients:

• 4 large yellow onions, thinly sliced
• 2 tablespoons butter
• 2 tablespoons olive oil
• 2 cloves garlic, minced
• 1 teaspoon sugar
• 1/2 cup dry white wine
• 6 cups beef broth
• Salt and pepper to taste
• 4 slices of crusty bread
• 1 cup grated Gruyere cheese

Kitchen Equipment Needed

To make this Costco French Onion Soup, you’ll need the following kitchen equipment:

• Large pot
• Wooden spoon
• Chef’s knife
• Cutting board
• Baking sheet
• Ladle
• Soup bowls

How to Make Costco French Onion Soup Recipe?

Step 1:

Melt butter and oil in a large pot. When they are hot, add the onions. Turn the heat down a little and stir the onions occasionally until they become golden brown.

Step 2:

When the onions are golden, add garlic and sugar. Garlic adds a delicious flavor to the soup. Stir for a while—it will start smelling better and better.

Step 3:

Add the white wine. Let it boil and bubble in the pan for a couple of minutes.

Step 4:

Add the beef broth. Let it mix and cook for a bit.

Step 5:

Toast some crusty bread and stir it in until all the ingredients are well combined. Then, spoon a ladle or two of the soup into a bowl large enough for your needs, sprinkle Gruyere cheese on top until it’s covered, and put it in the oven until the cheese is golden and bubbly.

Step 6:

Time to eat! Accompany it with a potato salad or baked whole cauliflower.

Tips from Julia

• Slice the onions super thin: this helps them cook evenly and makes them soft and sweet in the soup.
• Make sure you’re constantly stirring the onions while they’re cooking to prevent them from sticking to the bottom of the pot and getting too dark.
• You can use any cheese you like best instead of Gruyere.

What to Pair with this Costco French Onion Soup Recipe

Pair it with side dishes such as potato salad or baked whole cauliflower; they work well together.

Also, a quiche made from spinach and cheese is very good to eat with it. For drinks, a hot cup of Moroccan tea provides a nice contrast to the savory soup.

Nutritional Information

Here’s the rough nutritional information per serving (based on 6 servings):

• Calories: 350
• Total Fat: 18g
  • Saturated Fat: 9g
• Cholesterol: 40mg
• Sodium: 900mg
• Total Carbohydrates: 30g
  • Dietary Fiber: 3g
  • Sugars: 8g
• Protein: 15g

FAQ

Can I make this soup vegetarian?

Yes, of course! Use vegetable stock instead of beef stock for a vegetarian version of this soup.

How can I make this soup gluten-free?

To make this soup gluten-free, use gluten-free bread for the cheesy toast topping.

Can I freeze the leftovers of this soup?

Yes, you can freeze the leftovers of this soup for up to 1 month. Thaw them before eating and store them in airtight containers.

Wrapping Up

This Costco French Onion Soup recipe is perfect for people who love this kind of dish, also, if you always get the once in Cotsco, try this copycat recipe and let us know in the comment section, if it is like the original or at least close to it or not, Don’t forget to share this recipe with your friends and family, and be sure to subscribe to my blog for more tasty recipes.

How To Make Costco French Onion Soup Recipe

Recipe by JuliaCourse: DinnerCuisine: AmericanDifficulty: Easy

Servings

4

servings

Prep time

10

minutes

Cooking time

50

minutes

Calories

350

kcal

Total time

1

hour 

Learn how to make Costco French Onion Soup at home with this simple recipe—rich broth, caramelized onions, and melted cheese.

Ingredients

• 4 large yellow onions, thinly sliced

• 2 tablespoons butter

• 2 tablespoons olive oil

• 2 cloves garlic, minced

• 1 teaspoon sugar

• 1/2 cup dry white wine

• 6 cups beef broth

• Salt and pepper to taste

• 4 slices of crusty bread

• 1 cup grated Gruyere cheese

Directions

• Melt butter and oil in a large pot. When they are hot, add the onions. Turn the heat down a little and stir the onions occasionally until they become golden brown.
• When the onions are golden, add garlic and sugar. Garlic adds a delicious flavor to the soup. Stir for a while—it will start smelling better and better.
• Add the white wine. Let it boil and bubble in the pan for a couple of minutes.
• Add the beef broth. Let it mix and cook for a bit.
• Toast some crusty bread and stir it in until all the ingredients are well combined. Then, spoon a ladle or two of the soup into a bowl large enough for your needs, sprinkle Gruyere cheese on top until it's covered, and put it in the oven until the cheese is golden and bubbly.
• Time to eat! Accompany it with a potato salad or baked whole cauliflower.

Notes

• Slice the onions super thin: this helps them cook evenly and makes them soft and sweet in the soup.
• Make sure you’re constantly stirring the onions while they’re cooking to prevent them from sticking to the bottom of the pot and getting too dark.
• You can use any cheese you like best instead of Gruyere.