This Costco French Onion Soup is a cheesy and bubbly recipe, which is made with a rich broth and topped with a Gruyère cheese crouton. It’s the perfect easy lunch, ready in about 40 minutes.
Jump to RecipeCostco French Onion Soup Ingredients
- 1 ea Cuisine Adventures soup portion (frozen)
How To Make Costco French Onion Soup
This frozen soup can be prepared in several ways, but the oven method is recommended for the best results.
- Oven Instructions (Recommended): Preheat your oven to 400°F. Place the unwrapped, frozen soup brick (cheese-side up) into an oven-safe bowl or crock. Bake for 40 minutes, or until the cheese is completely melted, bubbly, and golden brown on top.
- Quick Oven Method: For a faster bake, place the unwrapped soup brick in a microwave-safe and oven-safe bowl. Microwave on high for 3 minutes. Then, carefully transfer the bowl to a 400°F oven and bake for about 20 minutes, until the cheese is melted and golden.
- Stovetop Instructions: Place the unwrapped soup brick in a small saucepan over medium heat. As the soup begins to melt, use a spoon to move the frozen block around. Reduce the heat to low as it begins to boil and stir more frequently until it is fully heated through, about 15-20 minutes. (Note: This method will melt the cheese into the soup rather than creating a browned top).
- Microwave Instructions: Place the unwrapped soup brick in a microwave-safe bowl. Heat on high for 3 minutes, stir, then microwave for an additional 2 minutes, or until hot.
Recipe Tips
- How to get the best cheesy top? The traditional oven method is by far the best way to get that classic, golden-brown, bubbly cheese crust that is the hallmark of a great French onion soup.
- Can I cook this in an air fryer? Yes. Follow the oven instructions but reduce the cooking time. Start checking the soup after 25 minutes to see if the cheese is melted and golden.
- What’s the most important step? For all heating methods, make sure you place the frozen soup brick with the cheese side facing up. This allows the cheese to melt properly over the top of the soup.
- What’s the quickest way to make it? The microwave method is the fastest, getting the soup ready in about 5 minutes, but you will not get the browned, cheesy topping.
What To Serve With French Onion Soup
This rich and savory soup is a meal in itself but pairs wonderfully with:
- A crusty baguette for dipping
- A simple green salad with a sharp vinaigrette
- A classic croque monsieur or a roast beef sandwich
How To Store French Onion Soup
- Freezer: Keep the soup portions in their original packaging in the freezer until you are ready to heat and serve them. It is not recommended to refreeze the soup after it has been heated.
French Onion Soup Nutrition Facts
- Serving: 285g (1 portion)
- Calories: 200kcal
- Carbohydrates: 18g
- Protein: 12g
- Fat: 10g
Nutrition information is estimated and may vary based on ingredients and cooking methods used.
FAQs
Yes, this is a fully cooked, frozen product. The instructions are for reheating the soup to be served hot.
Yes. A traditional French onion soup is made by slowly caramelizing a large amount of thinly sliced onions in butter, then simmering them in a rich beef broth with a bay leaf and thyme. It’s then ladled into crocks, topped with a slice of toasted bread and Gruyère cheese, and broiled until bubbly.
The soup is topped with a blend of cheeses, traditionally featuring Gruyère, which is known for its excellent melting quality and nutty, savory flavor.
Try More Recipes:
Costco French Onion Soup Recipe
Course: SoupsCuisine: FrenchDifficulty: Easy1
servings2
minutes40
minutes200
kcalA guide to perfectly heating the convenient Cuisine Adventures frozen French onion soup for a quick, delicious, and comforting meal with a classic bubbly cheese top.
Ingredients
1 frozen Cuisine Adventures French Onion Soup portion
Directions
- Preheat oven to 400°F.
- Unwrap one frozen soup brick and place it cheese-side up in an oven-safe bowl.
- Bake for 40 minutes.
- The soup is ready when the cheese on top is fully melted, bubbly, and golden brown.
- Let it cool for a minute before carefully enjoying.
Notes
- The oven method is highly recommended over the microwave or stovetop for the best result and the classic melted cheese crust.
- Ensure your bowl is large enough to contain the full 10 oz. soup portion once it melts.
- For air fryer cooking, follow the oven instructions but begin checking for doneness at 25 minutes.
- This is a great, easy option for a quick lunch or a simple but elegant first course for a dinner party.
