4.75 from 44 votes

French Onion Soup For Two

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1 hr 30 mins

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French Onion Soup is a classic that’s always in season!  This version is scaled perfectly for a lovely date night dinner for two. Start your romantic meal with this lovely soup, then serve these over-the-top Beef Tenderloin Fillets and Creme Brulee for dessert!

“This. Was. Amazing. It tasted as good as I had hoped it would! I love that it’s a smaller quantity, too.”

Photo of French Onion Soup with cheesy croutons on beige and black-striped napkin.

Why This Recipe is a Keeper!

Sharing one of my all-time favorite soups that is most definitely served across France! I’ve enjoyed it in French bistros there, and if it’s on a restaurant menu here, I always order it.

The onion is a humble ingredient that usually adds flavor to other dishes.  Soupe à l’Oignon, simply known as French onion soup, elevates this culinary workhorse to star status, like these Roasted Onions, and makes a luxurious, bistro-inspired meal for two.

Onions are caramelized with herbs to a rich golden brown, then simmered in a rich red wine-infused broth and topped with crusty, cheesy bread!

Caramelizing onions is definitely a labor of love, but the reward is a classic soup with incredible depth of flavor that’s well worth the time. With just a handful of simple ingredients and a little patience, you can recreate this classic French favorite right in your own kitchen!

Photo of French Onion Soup for Two on black striped napkin with spoon lifting out some of the soup.

How to Make French Onion Soup for Two:

Recipe Ingredients:

Here’s everything you’ll need to make this French onion soup recipe. See the recipe card below for the exact quantities.

Photo of ingredients for French Onion Soup for Two in glass bowls.

Ingredient Notes and Substitutions:

  • Onions: Use conventional yellow or sweet onions, not red or white. Red onions are better raw and white onions are sharper than yellow.
  • Olive Oil and Butter? Yes. Because butter tends to burn, you want to combine it with olive oil. No need to use expensive olive oil; a good, average olive oil will do. Ghee is a great substitute.
  • Red Wine and White Wine? The red wine gets the flavor party started, and a touch of dry white wine (or dry sherry) adds acidity and balance so the soup is not too sweet. NON-ALCOHOLIC SUBSTITUTE: Use half pomegranate juice and half water for the red wine and white wine vinegar for the white wine.
  • Beef Broth: A good-quality beef broth or stock is important for French Onion Soup.  However, good chicken, vegetable, or mushroom broth may be substituted.
  • Gruyere Cheese: Gruyere is a Swiss or Alpine cheese with a sweet, nutty, and salty flavor. It melts beautifully and adds savoriness without overpowering the other ingredients. A less expensive alternative would be Emmental or Grand Cru.

Step-By-Step Instructions:

  • Gather and prep all the ingredients.
Overhead shot of onions in white Dutch oven
  1. Heat a Dutch oven or another heavy pan over medium-high heat. Add the olive oil and butter. When the butter has melted, add the onions and stir to coat with the fat.
Overhead shot of partially cooked onions with thyme and bay leaf in white Dutch oven
  1. Reduce the heat to medium-low, cover, and cook for about 10 minutes to soften them and to help bring out some of the moisture, stirring several times. Add the salt, bay leaf, and fresh thyme. Leave uncovered, keep the heat to medium-low, and continue cooking, stirring often so the onions brown evenly.
Overhead shot of caramelized onions in white Dutch oven
  1. Cook until the onions are a rich brown color, about 40 to 50 minutes more. Add the garlic and cook briefly for approximately 30 seconds. Discard bay leaf and thyme sprigs.
Overhead shot of onions in white Dutch oven with red wine added
  1. Add the red wine, bring to a boil, and cook for 3 to 4 minutes or until almost evaporated. Stir in the flour and cook for 1 to 2 minutes.
Overhead shot of finished French Onion Soup in white Dutch oven
  1. Add the beef broth, bring to a boil, reduce the heat, and simmer for 8 to 10 minutes or until slightly reduced. Adjust the seasoning with salt and black pepper. Add the white wine or sherry, starting with 1 tablespoon. Add more to taste if needed. Keep warm.
Overhead shot of 9 slices of French bread with cheese on top before placing in the oven
  1. Preheat broiler. Arrange the baguette slices on a baking sheet in a single layer. Top the bread with cheese. Broil until melted and beginning to brown, 1 to 2 minutes.
French Onion Soup for Two - Overhead hero shot of two bowls on beige background garnished with thyme
  1. To serve, ladle into bowls and top with cheesy croutons. Alternatively, toast the bread at 325 degrees for 12 to 15 minutes, turning once. Place the croutons over the soup, sprinkle with cheese, and broil briefly to brown the cheese. Serve immediately.

Lovely, cheesy oniony goodness! French Onion Soup for Two is the perfect starter for a romantic, bistro-inspired dinner!

Photo of French Onion Soup for Two on black striped napkin garnished with the bread and thyme leaves.

Chef Tips and Tricks:

  • TIPS FOR CARAMELIZING ONIONS: Flavor-wise, there is no substitute for the low-and-slow stovetop method.
    • I’ve tried numerous ways to speed up the caramelizing process, including doing a large batch in a slow cooker and adding a pinch of sugar.  The result was brown onions with absolutely NO flavor!
    • I’ve tried salting the onions right away and also not salting the onions until they were done.  Both took between 45 minutes to 1 hour to achieve a rich, golden brown color.  I now salt the onions after they’ve softened up a bit and focus on their flavor rather than the time it takes to caramelize them.
    • Caramelized onions freeze well, so you may want to double or triple the onions to have them ready for another meal of this soup or for other recipes.
  • HOW TO KEEP FROM CRYING WHEN CUTTING ONIONS
    • Refrigerating onions first or placing them in the freezer for 15 to 20 minutes will slow the flow of the sulfur enzymes that are released when the onion is cut.
    • When working with a large volume of onions, place a small fan nearby to blow the tear-producing enzymes away from you.
    • Cut close to your stovetop exhaust fan or near an open window.
    • Wear swimming goggles.
    • Place a lit candle on your cutting board. The flame helps to burn off the sulfur compounds.
  • WAYS TO MAKE THE CHEESY CROUTON TOPPING:
    • The first and easiest way is to place the bread slices on a baking sheet, top them with the grated cheese, broil for several minutes, and serve them atop the soup.
    • The second way is to serve the soup gratinéed or baked in OVENPROOF bowls.  Toast the bread at 325 degrees for 12-15 minutes, turning once. Place the croutons over the soup, sprinkle with cheese, and broil briefly to brown the cheese.
    • Serve either way immediately.

recipe faqs:

What is the difference between onion soup and French onion soup?

Onion soup usually combines onions and uses any type of stock or broth. French onion soup is traditionally made with yellow onions and is always made with beef stock or broth.

Can you make French onion soup ahead of time?

Yes, you absolutely can! Make the soup up to two days ahead of serving. Cool thoroughly and refrigerate. Reheat on the stovetop until heated through. Make the crouton topping when ready to serve.

Can French onion soup be frozen?

This soup, or just the caramelized onions, will freeze beautifully.  Thaw in the refrigerator or microwave.  Reheat on the stovetop until heated through.  Make the crouton topping when ready to serve.

Photo of French Onion Soup for Two with spoon lifting out some of the soup.

More elegant soup recipes:

Get all my soup recipes at Soup and Stew Recipes – From A Chef’s Kitchen.

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4.75 from 44 votes

French Onion Soup for Two

French Onion Soup is a classic that is always in season! This version is scaled perfectly for a lovely dinner for two!
Prep Time: 15 minutes
Cook Time: 1 hour 15 minutes
Total Time: 1 hour 30 minutes
Servings: 2

Video

Ingredients 

  • 1 tablespoon olive oil
  • 4 tablespoons unsalted butter
  • 2 large yellow onions, about 2 pounds, halved and thinly sliced (8-9 cups)
  • 1/2 teaspoon salt
  • 1 bay leaf
  • 2 sprigs fresh thyme
  • 4 cloves garlic, minced
  • 1 tablespoon all-purpose flour
  • 1/2 cup dry red wine
  • 4 cups beef broth or stock, preferably low sodium
  • 1 to 2 tablespoons dry white wine or dry sherry, optional and if needed
  • Freshly ground black pepper, to taste
  • 1 small sourdough baguette, sliced into 4 thick pieces, ends discarded
  • 1/4 pound grated Gruyere cheese

Instructions 

  • Heat a Dutch oven or another heavy pan over medium-high heat.
  • Add the olive oil and butter. When the butter has melted, add the onions, stirring to coat with the fat.
  • Reduce heat to medium-low, cover and cook for about 10 minutes to soften them and to help bring out some of the moisture, stirring several times.
  • Add the salt, bay leaf, and fresh thyme. Leave uncovered, keep the heat to medium-low, and continue cooking, stirring often so the onions brown evenly. Cook until the onions are a rich brown color, about 40-50 minutes more.
  • Add the garlic and cook briefly for approximately 30 seconds. Discard bay leaf and thyme sprigs.
  • Add the red wine, bring to a boil and cook 3-4 minutes or until almost evaporated.
  • Stir in the flour and cook for 1-2 minutes.
  • Add the beef broth, bring to a boil, reduce heat and simmer 8-10 minutes or until reduced slightly.
  • Adjust seasoning with salt and black pepper. Add the white wine or sherry, starting with 1 tablespoon. Add more to taste if needed. Keep warm.
  • Preheat broiler. Arrange the baguette slices on a baking sheet in a single layer. Top the bread with cheese. Broil until melted and beginning to brown, 1-2 minutes.
  • To serve, ladle into bowls and top with cheesy croutons. Alternatively, toast the bread at 325 degrees for 12-15 minutes, turning once. Place the croutons over the soup, sprinkle with cheese and broil briefly to brown the cheese. Serve immediately.

Notes

SUBSTITUTIONS:
  • If you prefer not to use alcohol, use half pomegranate juice and half water for the red wine and white wine vinegar for the white wine.
  • Vegetable or mushroom broth can be used in place of beef broth.
  • Emmental or Grand Cru are less expensive alternatives to Gruyere.
TIP:
  • Refrigerating onions first or placing them in the freezer for 15-20 minutes will slow the flow of the sulfur enzymes released when the onion is cut.
MAKE AHEAD:
  • Make the soup up to two days ahead. Cool thoroughly and refrigerate.
  • Reheat on the stovetop until heated through.
  • Make the crouton topping when ready to serve.
FREEZER-FRIENDLY:
  • This soup or just the caramelized onions will freeze beautifully.
  • Thaw in the refrigerator or microwave.
  • Reheat on the stovetop until heated through.
  • Make the crouton topping when ready to serve.

Nutrition

Serving: 2Calories: 683kcalCarbohydrates: 24gProtein: 26gFat: 49gSaturated Fat: 27gPolyunsaturated Fat: 3gMonounsaturated Fat: 17gTrans Fat: 1gCholesterol: 123mgSodium: 2990mgPotassium: 577mgFiber: 3gSugar: 7gVitamin A: 1291IUVitamin C: 15mgCalcium: 665mgIron: 2mg

Nutritional values are automatically calculated using unbranded products and are estimates only. Actual results may vary based on ingredients used and portion sizes. Adjust as needed for dietary restrictions, allergies, or health concerns.

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About Carol

Carol is a personal chef with 22 years of experience cooking food people want to eat! Here, you'll find expert techniques, time-saving tips, and flavor-packed dishes you'll be proud to serve family and friends.

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54 Comments

  1. Mat says:

    I always found that cooling the French onion soup and leaving it in the fridge overnight and heat it up for lunch the next day brings out more flavor.

    1. Carol says:

      Hi, Mat, Thanks so very much! For sure! Many times things like soups, stews, roasts and pasta such as lasagna will actually improve with time as the flavors marry. Thanks again!

  2. Kate says:

    5 stars
    This soup is delicious and very easy to make. I used a mandoline to slice the onions. This is my third time enjoying this.

    1. Carol says:

      Hi, Kate, Thanks so very much and so happy you love this recipe! Appreciate you trying my recipe out of so many others out there and for the nice comment!

  3. Brandon McVade says:

    5 stars
    Followed the recipe as instructed and not left wanting. The soup is a great dinner and can be easily scaled for guest size. A great substitute for Gruyere cheese is Swiss cheese!

    1. Carol says:

      Hi, Brandon, Thanks so very much and happy you enjoyed! Appreciate you trying my version out of so many others out there and for taking the time to comment and rate.

  4. Lou-Anne Schmelter says:

    5 stars
    This was the best onion soup I ever ate. Just beautiful! Thank you.

    1. Carol says:

      Hi, Lou-Anne, Thank you so very much!! I really appreciate hearing that! I appreciate you giving my recipe a try out of so many others and for taking the time to come back and comment and rate.

  5. Kate B says:

    5 stars
    This is a wonderful soup, just the right flavors. Great directions. Making it weekly and trying to not eat it all myself.

    1. Carol says:

      Hi, Kate, Thanks so very much and happy you love this recipe! Appreciate you giving this recipe a try out of so many others and for the nice comment. Thanks again!