Easy French Onion Soup Recipe

Looking for an easy french onion soup recipe? Look no further! This recipe is simple, delicious, and perfect for a winter meal.

Hey Friends! How’s your winter recipe rotation going? I love switching it up and making things interesting in the kitchen. Easy French Onion Soup does that for me! Who doesn’t love a warm cup of delicious soup during the winter months!

French onion soup is the perfect comfort food: savory, creamy, and slightly sweet. The beauty of this dish lies in its simplicity–just a few ingredients are needed to bring out the flavor of caramelized onions! So if you’re looking for an easy yet delicious dinner that’s sure to please the whole family, this french onion soup recipe is just what you’ve been searching for. 

sliced onion on cutting board
Thinly slice onions.
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What’s the difference between onion soup and french onion soup?

Onions are often included in soups as an easy flavor booster, and this particular ingredient has been used for centuries to add heartiness and complexity to a dish. 

Onion soup is typically a light broth-based soup with cooked onions that may have some type of broth mixture (beef, chicken, vegetable, etc.), herbs, and other seasonings like garlic or salt added. French onion soup however is on a whole other level. It often starts with melted butter and oil is used to intensely caramelize the onions, sometimes along with garlic and/or herbs like thyme – followed by some type of stock or wine that further helps bring out the flavors even more. 

thinly sliced onions on cutting board

What is onion soup broth made of?

Traditionally onion soup broth is made from beef stock. Not a fan of beef? No worries as you can easily use a vegetarian or even vegan version of broth instead! Keep in mind, you may need to use fresh herbs, spices, or celery for added flavor!

measure cup of red wine ready to add to a simmering pot of soup

Can I use mozzarella instead of Gruyere in French onion soup?

Let’s talk cheese! I don’t know about you but when you add any warm melted to cheese to anything, I’m going to be a happy girl! haha Read on for why I believe Gruyere is the way to go for this recipe.

Though it may sound like a good idea to switch up the cheese used in French onion soup, understanding the differences between mozzarella and Gruyere is key. Mozzarella is a healthy dairy option – low in fat but high in protein – while Gruyere is a much harder cheese with a nuttier flavor. It might not be worth making the swap if you were looking for that cheesy layer of flavor on top, as mozzarella’s mild-tasting profile won’t add anything special to your soup. 

French Onion Soup Recipe & Instructions

French onion soup in white crock on top of table

Easy French Onion Soup Recipe

French onion soup is the perfect comfort food: savory, creamy, and slightly sweet. The beauty of this dish lies in its simplicity–just a few ingredients are needed to bring out the flavor of caramelized onions! So if you're looking for an easy yet delicious dinner that's sure to please the whole family, this french onion soup recipe is just what you've been searching for. 
5 from 1 vote
Prep Time 10 minutes
Cook Time 30 minutes
Broil Time 5 minutes
Total Time 45 minutes
Course Main Course, Soup
Cuisine French
Servings 6 servings


  • 4 tbsp Butter
  • 3 Large White Onions
  • 1 tsp Sugar
  • 2 tbsp Flour
  • 32 oz Beef Broth
  • 1/4 cup Red Wine or Sherry
  • 6 Slices of French bread, sliced diagonally
  • 1/4 lb Gruyere Cheese


  • Melt the butter in a large, deep pot over medium heat
  • Add onions, cover, cook for 15 minutes, stir occasionally, untel soft and golden
  • Uncover, increase heat to medium high
  • Stir in sugar
  • Cook uncovered for 6 to 7 minutes, stirring often
  • Sprinkle in flour
  • Stir in broth, wine and 1 cup of water
  • Simmer for 5 minutes
  • Heat broiler, spread bread slices on a baking sheet, toast for 1 to 2 minutes
  • Place 6 ovenproof bowls or crocks on a baking sheet, divide soup evenly
  • Use a vegetable peeler to thinly slice pieces of cheese.
  • Place a slice of toast on each serving of soup, top with cheese.
  • Heat under broiler for 3 minutes or until cheese is melted and bubbling. Serve warm
Keyword easy french onion soup

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Cut French bread on a diagonal and toast in the broiler for 2 minutes, both sides

Want more soup ideas? My Quick Minestrone Soup Recipe You Can Make in 30 Minutes is another great dinner idea! or this Best Spring lettuce with Leeks Keto Soup Recipe.

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sliced cheese and bread added to small crock of soup ready to broil
Add shaved cheese and broil for 3 minutes

Congratulations! You just learned how to make a delicious and easy french onion soup! French Onion Soup can be the highlight of any dinner. Who doesn’t love some warm, gooey cheese on top of a big bowl of hearty and flavorful soup? So why not give this recipe a try next time you’re in the mood to make something special? Let me know what you think! Bon Appetit!

bowl of french onion soup on table
Susan Signature with feather pen
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