French Onion Soup Casserole Recipe | LaaLoosh (2024)

By Wendy

French Onion Soup Casserole Recipe | LaaLoosh (1)

French Onion Soup has always been one of my favorite dishes…who doesn’t love the idea of toasted bread and gooey cheese, melted all over a hot and flavorful onion soup?

But the traditional French Onion Soup recipe is not low calorie or Weight Watchers friendly. I’ve tried a few pre-made, low calorie versions that I’ve found in grocery stores but the taste is either blah or the portion is super small. So I set out on a journey to make my own but also decided to make it as a casserole, just because I was hungry and wanted a meal that had some substance.

It was so easy to make and the finished product was delicious! All the flavors that I love but for fewer Points. And making it into a casserole was really easy. It just basically the soup with more onions and less broth. If you want to make this dish as a soup, just use more broth when making it. So simple, yet so perfect.

And each very large serving is just 5 Points. This low calorie French Onion Soup Casserole Recipe is perfect for warming up on a cold day.

Enjoy!

French Onion Soup Casserole Recipe | LaaLoosh (2)

A casserole version of traditional French Onion Soup, this dish is a real winner. Each serving is very big, and you get all the delicious flavors that are expected. A perfect, low calorie recipe to warm you up on a cold winter day.

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Prep Time 20 minutes mins

Cook Time 45 minutes mins

Total Time 1 hour hr 5 minutes mins

Servings 4

Calories 237 kcal

Equipment

  • 1 Dutch Oven

  • 1 Oven

Ingredients

  • 5 medium onions - thinly sliced
  • 2 tbsp light butter
  • 1 cup fat free beef broth
  • ½ cup red wine
  • 3 garlic cloves
  • loaf French baguette
  • 4 slices light Swiss cheese - I used Jarlsberg
  • 1 tbsp Worcestershire sauce
  • 1 tbsp balsamic vinegar
  • 1 tsp paprika
  • 1 tsp dried thyme
  • 1 tsp salt
  • ½ tsp black pepper

Instructions

  • Set a large pot or Dutch oven medium high heat, melt butter and add in onions, garlic and salt.

  • Cook, stirring frequently until onions become caramelized, about 30-40 minutes.

  • If onions start to stick to pan, just stir a tbsp or two of the broth as needed.

  • Once onions are caramelized, add in the broth, wine, Worcestershire sauce, paprika, pepper and thyme. Simmer over medium heat for 20 minutes, stirring occasionally.

  • Turn heat to low and add in vinegar and season with additional salt and pepper if desired. Cover and keep over low heat to stay hot while you prepare the bread.

  • Preheat oven broiler. Slice 1/3 of a loaf of French baguette into about 12 slices.

  • Spray a baking sheet with nonfat cooking spray, and arrange baguette slices evenly on sheet. Lightly mist again with an olive oil mister or the nonfat cooking spray and then place in oven for 3 minutes on each side, or until bread is well toasted on both sides.

  • Remove bread from oven and set it to bake on 375 degrees.

  • Pour onion mixture into an 8X8 casserole dish. Top evenly with bread slices and then cover evenly with Swiss cheese slices.

  • Place casserole dish into oven and let bake until cheese is melted and bubbly and beginning to brown, about 10-15 minutes. Serve immediately.

Nutrition

Serving: 1.5 cupsCalories: 237 kcal (12%)Carbohydrates: 29 g (10%)Protein: 11 g (22%)Fat: 5 g (8%)Fiber: 3 g (13%)

Course: Main Course Recipes

Cuisine: French Recipes

Diet: Low Calorie Recipes, Low Fat Recipes, Vegetarian Recipes

Main Ingredient: Vegetable Recipes

Category: Casserole Recipes

Tried this recipe?Let me know how it was!

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20 Comments

  1. barb9 years agoReply

    Followed exact directions. No problem with extra soup. This is Great! Thanks.

  2. Sarah11 years agoReply

    About to assemble – but my onions seem like they’re too “soupy”. How much liquid should be in the onion mixture?

  3. Gail11 years agoReply

    How does this make 4 servings of 1-1/2 cups each with only 1-1/2 cups total liquid?

  4. Dana11 years agoReply

    Got very excited coming across this recipe only to find out it’s not actually vegetarian. I’m sure that vegetable broth would not make this taste the same.

  5. Chriseda Howard11 years agoReply

    I just wanted you to know that I made this for my husband and myself this week and we both loved it. Thank you so much for the tip about using some broth to keep the onions from sticking to the pot, that was a real issue for me.

  6. Heather Mathieson11 years agoReply

    Considering I cook for 1… how well do you think this would keep/reheat??

  7. Gigi11 years agoReply

    I made this tonight and it was very tasty. I wouldn’t call it a casserole it was too soupy, We ate it as a soup… I followed the directions exactly,

  8. Rebecca O'Malley11 years agoReply

    this sounds great. do you think you could make the soup mixture ahead of time and refrigerate then just heat up with bread, cheese, etc later?

    • laaloosh11 years agoReply

      Sounds like a good idea! I think it should work fine….

  9. KatieQ11 years agoReply

    This casserole should not be classified as vegetarian because it is made with beef broth and Worcestershire sauce which contains anchovies..

    • Beth Baker11 years agoReply

      Easily remedied by subbing beef flavored veggie broth and anchovy free worcestershire …….but the last bottle of Worcestershire I picked up – no longer listed anchovies in the ingredients.

  10. Steph11 years agoReply

    Caramelize onions for 30-40 minutes?

    • laaloosh11 years agoReply

      Yes.

    • k l11 years agoReply

      they are wonderful.

    • Cate9 years agoReply

      That is what makes it so yummy!!!!!. I always cook them slow on low heat, but this is the best recipie I have found. I dont have the individual crocks and it still taste the same!

  11. Michelle Englehart Miller11 years agoReply

    Sounds delish, but to clarify, you’d have to use veg broth for this to be vegetarian.

  12. Just One Boomer (Suzanne)11 years agoReply

    Perfect for winter comfort food for those of us up in the northeast blue states.

  13. Elizabeth @ Food Ramblings11 years agoReply

    making it this weekend!!!

  14. Judy@lifeonthefoodchain.com11 years agoReply

    This is pure genius! If it wasn’t 8 AM I’d run and make it now…it may be on tonights dinner menu, though. Looks delish.

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Food Recipes

French Onion Soup Casserole Recipe | LaaLoosh (2024)

FAQs

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

What is the Difference Between Onion Soup and French Onion Soup? French onion soup is always made with beef stock. Other onion soups can be made with chicken, vegetable, or beef stock. Additionally, French onion soup typically contains wine or sherry, which isn't typical or necessary in other onion soups.

How do you add depth of flavor to French onion soup? ›

A few sprigs of thyme and a bay leaf elevate the soup even more, but I take it a step further, adding a splash of fish sauce for complexity and depth—don't worry, it won't taste fishy—and a hit of cider vinegar to balance some of that oniony sweetness.

What broth is French onion soup made of? ›

What Is French Onion Soup? French onion soup, or soupe à l'oignon gratinée, is a classic French dish made with caramelized onions and beef stock or broth. The soup is topped with bread and cheese, then gratinéed to rich, gooey perfection. It's traditionally served in a ramekin or a ceramic crock with a handle.

Should French onion soup be thick or thin? ›

Made slightly thicker than most watered down soups because every mouthful NEEDS a slightly thickened texture to compliment the caramelized onions.

Why does French onion soup taste so good? ›

French onion soup is the ultimate comfort food. Onions get slowly cooked until sweet and caramelized, then simmered in rich broth until they're practically falling apart. To finish it off, toasted bread is added to give it that lovable crisp-gone-soggy texture and a generous amount of Gruyère cheese is melted on top.

Why do French people eat French onion soup? ›

The Onion Soup, a traditional and warming dish

It has even become a trendy dish that tourists are eager to try to experience French gastronomy. However, onion soup is in fact not part of French people's daily meals. It was originally meant to be eaten after a family reunion in the middle of the night to cure hangovers

Why do you put baking soda in French onion soup? ›

The caramelized onions for this soup cook more quickly due to a pinch of baking soda but still have that deep, slow-cooked flavor. Topping the soup with hot, cheesy toasts prepared while the soup simmers, eliminates the need to bake the soup in specialty French onion soup bowls.

Why does my French onion soup taste weird? ›

Lack of seasoning: Seasoning is crucial in any dish, and French onion soup is no exception. If you don't add enough salt, pepper, or other herbs and spices, the soup may taste bland. Weak broth: The quality and intensity of the beef broth used in the soup can greatly impact its flavor.

What is traditionally served with French onion soup? ›

French onion soup (French: soupe à l'oignon [sup a lɔɲɔ̃]) is a soup of onions, gently fried and then cooked in meat stock or water, usually served gratinéed with croutons or a larger piece of bread covered with cheese floating on top.

Why is my French onion soup watery? ›

Sometimes soup just needs to simmer longer to reach the perfect consistency. Check to see if the vegetables are tender, and then taste the broth. If the soup tastes a bit watery, give it more time.

What can you substitute for beef broth in French onion soup? ›

Not surprisingly, beef consommé is another excellent substitute for beef broth in recipes. Consommé is not as common as broths and stocks but is essentially made from a boiled-down stock. You can make consommé with beef, chicken, or fish, and this clear soup is commonly served in restaurants before the main course.

What cheese can I use instead of gruyère in French onion soup? ›

Other Swiss types of cheese like Raclette cheese or Appenzeller Cheese or Dutch cheeses like Edam cheese or Gouda or Jarlsberg cheese from Norway or American Swiss cheese can all be substituted.

Why do you add flour to French onion soup? ›

Onion soup, at its very essence, is nothing more than onions and water boiled together. Period, done, finished, everything added from that point on is pure opinion. Caramelizing the onions brings out sugars, and makes a more luxurious silky and sweet soup, adding flour gently thickens and provides body.

What is a substitute for white wine in French onion soup? ›

If you prefer not to use Wine, you can substitute 3 Tablespoons white wine vinegar + chicken or beef broth to make 3/4 cup.

How big to cut onions for French onion soup? ›

Peel each half, keeping the flesh tethered at the root end. Slice 1/4-inch thick longways, pole-to-pole, using a mandolin if you have one.

What is the difference between French onion and onion? ›

Is there a difference between onion soup and French onion soup? Onion soup usually requires a combination of a variety of onions. French onion soup is traditionally made with yellow onions. Also, French onion soup is always made with beef stock while onion soup uses any type of stock or broth.

Is French onion soup just called onion soup in France? ›

As is true of “French toast” and “French fries,” “French onion soup” is not known as such in France. Referred to most often as soupe à l'oignon, this hearty dish is a staple at weddings, when it's served at the end of the night—with the questionable goal of lining the stomach after all that Champagne.

What are the two types of soups in French? ›

Traditionally, french soups are classified into two groups: clear soups and thick soups. The established French classifications of clear soups are bouillon and consommé.

Is there a difference between onion and French onion dip? ›

What is the difference between French onion dip and regular onion dip? French onion dip is typically made with French onion soup mix, a mixture of dried onions and beef bouillon. Onion dip is made with only onions.

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