Is there anything better than a perfect French Onion Soup covered in croutons and glorious amounts of melted cheese? I think not! I added Homemade Croutons to make this every single detail about this recipe will WOW anyone who tries it! Be sure to try my Lasagna Soup next!

French Onion Soup in Red Crock

French Onion Soup

This is the best French Onion Soup hands down. Even better than any we have had in fancy restaurants! Be sure to follow the recipe exactly when making it, then you will know just how amazing it is. Without a doubt, this recipe is what to make if you really want to impress your family and friends.

When making this soup, don’t skimp on the quality of your ingredients! I like to use good quality butter like Challenge Butter. It’s churned daily from two natural ingredients: the freshest 100% real pasteurized sweet cream and salt. That’s it! The taste is pure, and the flavor is consistent, which is extremely important in a recipe where you want that buttery rich flavor to shine through.

French Onion Soup Bowl

What Kind of Onions Are Best for French Onion Soup?

My recipe uses both red onion and sweet onion. Red onions have the purplish-red skin in which color is layered though it’s white flesh, although the color does fade when cooked. They are similar to yellow onions in flavor when cooked. Red onions are (in my opinion) the best onion for eating raw and are ideal for salads, guacamole, and sandwiches. Sweet onions are considered the best for frying, in recipes like onion rings or soups. More often then not, when you are slicing onions it’s the sweet onions that will make you cry. (They may tie with yellow onion in this area!) I love the combination of the two in this recipe and love how well these onions complement each other. If you use all red onion the flavor may be too mild, if you use all sweet onion the flavor may be too strong.

When choosing onions in the store the best ones will be firm, have a crackly outer skin, and have a mild scent. If their scent is overwhelming it might be a sign that the onion is starting to spoil.

Make sure you cook the onions as suggested in this recipe and give yourself a few extra minutes just to make sure they are the soft, almost sticky consistency. You may have noticed that the onions in our recipe don’t look brown or caramel in color. That is because the Worchestire sauce is not added until later. If you want the look of a more caramelized onion before adding your broth, you certainly could add the Worchestire in the beginning, when the onions are in their simmering stage.

Homemade Croutons for French Onion Soup

Homemade Croutons with French Onion Soup

As much as I love a thick piece of french bread soaking up all that amazing onion soup, it can be hard to maneuver! I love the option of using croutons instead. This Homemade Crouton recipe is absolute perfection and is the perfect complement to our French Onion Soup. Every single bite will get a little soup, a little crouton, and little cheese ensuring you are satisfied until the very last drop.

Spoonful of French Onion Soup

We used Shiraz in this recipe simply because I enjoy drinking it as well. The final dinner was a fresh side salad, the french onion soup, and a glass of Shiraz to wash it all down. This recipe is not just good, it is extraordinary! You are going to love it!

More French Onion Recipes

5 from 6 votes

French Onion Soup

Prep Time 15 minutes
Cook Time 1 hour
Total Time 1 hour 15 minutes
So good that friends will beg you for the recipe!



  • 4 tablespoons Challenge salted butter
  • 1 teaspoon kosher salt
  • 2 large red onions, thinly sliced (about 5 cups)
  • 2 large sweet onions, thinly sliced (about 5 cups)
  • 4 cups (32 ounces) chicken broth
  • 4 cups (32 ounces) beef broth
  • ½ cup red wine
  • 1 tablespoon Worcestershire sauce
  • 2 sprigs fresh parsley
  • 1 sprig fresh thyme leaves
  • 1 tablespoon balsamic vinegar
  • salt and freshly ground black pepper, to taste


  • 4 cups large homemade croutons
  • 2 cups (216 g) Gruyere cheese, shredded
  • 2 cups (160 g) Asiago cheese, shredded



  • Melt butter in a large pot or Dutch Oven over medium-high heat.
  • Stir in salt, red onions and sweet onions. Cook 35 minutes, stirring occasionally, until onions are sticky and almost syrupy. (Onions will be translucent.)
  • Add the chicken broth, beef broth, red wine, and Worcestershire sauce into the pot.
  • Bundle the parsley and thyme with twine and place in pot. Simmer over medium heat for about 20 minutes, stirring occasionally. Remove and discard the herbs.
  • Reduce the heat to low, mix in balsamic vinegar and season with salt and pepper. Simmer 5 minutes.


  • Preheat oven broiler.
  • Arrange 4 large oven-safe bowls or crocks on a rimmed baking sheet. Fill each bowl ⅔ full with hot soup. 
  • Top each bowl with 5-6 toasted croutons (about 1 cup), ½ cup Gruyere cheese, and ½ cup of the Asiago cheese
  • Broil 4-5 minutes, or until bubbly and golden brown. Keep a close eye on them!
  • Serve immediately.


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Meet Amanda Rettke

Amanda Rettke is the creator of I Am Baker, and the bestselling author of Surprise Inside Cakes: Amazing Cakes for Every Occasion – With a Little Something Extra Inside.Over the course of her 15+ year blogging adventure, she has been featured in and collaborated with the Food Network, New York Times, LA Times, Country Living Magazine, People Magazine, Epicurious, Brides, Romantic Homes, life:beautiful, Publishers Weekly, The Daily Mail, Star Tribune, The Globe and Mail, DailyCandy, YumSugar, The Knot, The Kitchn, and Parade, to name a few.

Reader Comments

  1. Love your recipes! Didn’t try this yet – will soon! but please be advised of how to properly spell Worchestershire sauce! The British (like my late mother-in-law) just simplify it and say “Wooster”

    1. Hi, Diane! I work with iambaker and am happy to help with questions. You could try using soy sauce; however, it may affect the taste a bit and we have not tested it. Let us know if you try it and how the soup turns out. Have a great day!

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