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French Onion Beef Broth Soup Recipe with Mustard

The mustard in this beef broth soup recipe gives the dish a bit of a kick but be careful not to add too much. Likewise, the soy sauce boosts the meaty flavor, which contrasts so wonderfully with the juicy, sweet onions in this French onion soup.

Mustard and soy sauce are not ingredients in traditional French onion soup. Nor will you find mozzarella or provolone to be French onion soup cheese options for a classic French onion soup, but these ingredients do bring out the flavor of the other ingredients and this soup is delightfully different.

If you like the sound of a strong, meaty, red wine enhanced broth teamed with sweet, juicy onions, this soup will be everything you dream of. Top this red wine and beef broth soup recipe with a cheese crouton and you will really be able to savor the results. This is probably one of those great onion soup recipes that you will want to make again and again because it is so full flavored and an easy French onion soup to create.

So what is your opinion of mustard in French onion soup? A French chef would probably give a Gallic shrug and refuse to contemplate changing his classic recipe. An inquisitive home cook however is more likely to think, “well why not?” Every recipe today exists because someone tried it, liked it and shared it. So if you want to push the boundaries and add a novel twist to your French onion soup, try this adventurous recipe.

Deliciously Simple French Onion Beef Broth Soup
Summary: Mustard, soy sauce and red wine are the ingredients used to bring out the beautiful of this French onion soup. Not traditional at all but very, very tasty.
Cuisine: French
Recipe type: Soup
Serves: 8
Prep time: 
Cook time: 
Total time: 
  • 4 yellow onions, sliced
  • 1 teaspoon sugar
  • 1 teaspoon salt
  • 1 teaspoon dried thyme
  • 2 tablespoons butter
  • 2 tablespoons soy sauce
  • Salt and freshly ground black pepper, to taste
  • ½ teaspoon dried mustard
  • 6 cups beef broth
  • ¼ cup red wine
  • 8 slices toasted bread
  • 8 slices provolone, mozzarella or gruyere cheese
  1. Heat the butter in a big pot over a medium heat, and then add the onions, sugar, salt, and sauté for 5 minutes, stirring often.
  2. Turn the heat down to low and let the onions caramelize for about 40 minutes, stirring occasionally. They are done when they are dark brown and soft.
  3. Add the soy sauce, mustard, thyme, and wine.
  4. Add salt and pepper to taste.
  5. Let the wine cook down for a few minutes.
  6. Meanwhile, top the toast with the cheese and broil until the cheese is golden brown and bubbly.
  7. Add the broth to the soup and bring it to a boil.
  8. Divide the soup between 8 serving bowls and top each one with a slice of cheese toast.

Photo Description:

Onion soup served in a teacup? Well if you are going to add soy sauce and mustard to the recipe, you might also like to try novel serving ideas. The recipe is an interesting one, especially if you are accustomed to classic French onion soup with its beef, thyme, Gruyère and caramelized onion flavors. This one offers a twist on the classic recipe but you do not have to choose which you like best. This soup is a winner in its own right. It does not need to complete with the original recipe, but instead offers something unusual for those times when you are in the mood for something different.


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Christine Szalay-Kudra

Hello there, I'm Christine. Welcome to my blog where you will find a comprehensive collection of soup recipes for every season, occasion and palate. There are hundreds of soup recipes for you to try out, those which warm you up during the cooler months, and even chilled soups and dessert soups if you want to try something new.

Try making your next soup in the pressure cooker or crockpot, or prepare it in the conventional way. Choose from classics such as potato and leek soup, beef broth, French onion soup, or chicken noodle soup, or investigate a more unusual dish, like our cabbage bean soup or one of the Chinese soup recipes.

In addition to soups, broths and chowders, I have collected stew recipes, along with low-calorie, low-carb and heart-healthy options, so you can make soups which are nutritious and good for you, as well as fresh-tasting and delicious. Here at Amazing Soup Recipes, there are recipes for every taste, many of which are really quick and easy to make.

Thanks for visiting,