Looking to warm up your day with a bowl of comfort? My Savory Instant Pot French Onion Soup is your answer! This easy delight is rich in flavor, with caramelized onions and melted cheese that create pure bliss. I'll guide you through each step to achieve that classic taste in a fraction of the time. Let’s dive into the details and make your kitchen the coziest place around!
Ingredients
Main Ingredients
- 4 large yellow onions
- 4 tablespoons unsalted butter
- 1 tablespoon olive oil
- 3 cloves garlic
Additional Ingredients
- 6 cups low-sodium beef broth
- 2 tablespoons soy sauce
- 1 teaspoon dried thyme
- 1 bay leaf
Seasonings & Toppings
- Sugar, salt, and pepper
- 8 slices of French baguette
- 2 cups shredded Gruyère cheese
The main ingredients create the base of the soup. Thinly sliced onions are the star. You need four large yellow onions for the best flavor. Butter and olive oil help caramelize the onions. Garlic adds a nice kick.
Next, you have the additional ingredients. Low-sodium beef broth gives depth to the soup. Soy sauce adds umami flavor and richness. Dried thyme brings a hint of earthiness. The bay leaf adds a subtle aroma.
For seasonings and toppings, sugar balances the flavors. Salt and pepper enhance the taste. The toasted French baguette gives texture. Gruyère cheese is key for that melty, cheesy topping. Each ingredient plays a role in making this soup savory and delightful.

Step-by-Step Instructions
Sautéing Onions
First, set your Instant Pot to Sauté mode. This will heat the pot. Next, add 4 tablespoons of unsalted butter and 1 tablespoon of olive oil. Let them melt together. Once melted, add 4 large yellow onions that you have thinly sliced. Sprinkle in 1 teaspoon of sugar. Stir often for about 15 to 20 minutes. You want the onions to turn a golden brown. This caramelizing step is key for great flavor.
Mixing Ingredients
After the onions are caramelized, it’s time to add 3 cloves of minced garlic. Sauté this mixture for another 2 minutes. This will make your kitchen smell amazing! Now, pour in a splash of low-sodium beef broth. This helps deglaze the pot. Scrape up any tasty bits stuck to the bottom. Then, add in the rest of the beef broth (about 6 cups), 2 tablespoons of soy sauce, 1 teaspoon of dried thyme, and 1 bay leaf. Don’t forget to season with salt and pepper to taste. Stir everything together well.
Pressure Cooking
Now, close the lid of the Instant Pot. Set it to Pressure Cook on high for 25 minutes. When the timer goes off, let it release the pressure naturally for about 10 minutes. After that, you can quick release any remaining pressure. While the soup cooks, you can prepare your toppings. Preheat your oven's broiler to get ready. Place 8 slices of toasted French baguette on a baking sheet and top each with 2 cups of shredded Gruyère cheese. Broil for just 2 to 4 minutes, until the cheese is bubbly and golden brown.
Tips & Tricks
Perfecting Caramelization
Caramelizing onions is key to great French onion soup. Slow cooking brings out the sweet flavor. I recommend slicing the onions thinly to help them cook evenly. Use the Sauté mode on your Instant Pot. Add butter and olive oil. Stir in sugar after the onions soften. This step adds a nice sweetness that balances the soup.
To enhance the flavor, cook the onions for about 20 minutes. Stir every few minutes. This way, they turn golden brown and develop a rich taste. If you find the onions are cooking too quickly, reduce the heat or add a pinch of salt. This helps draw out moisture and slows down cooking.
Serving Suggestions
To present the soup beautifully, use deep bowls. Ladle the soup into each bowl, ensuring pieces of caramelized onion are visible. Top with a toasted baguette slice coated in melted Gruyère cheese. This adds a nice texture and flavor contrast.
For an extra touch, sprinkle fresh thyme or parsley on top. It adds a pop of color and freshness. You can serve more toasted baguette slices on the side. This gives everyone the chance to enjoy the cheesy goodness.
Equipment Recommendations
For this recipe, a reliable Instant Pot is key. I suggest using the Instant Pot Duo or the Instant Pot Ultra. Both models work well and have great features for this soup.
You will need some basic tools for prep. A sharp knife is crucial for slicing onions. A cutting board makes the process easier. A ladle is helpful for serving the soup. Finally, a baking sheet is needed for broiling the cheesy baguette slices. These tools will make your cooking experience smooth and fun.
Variations
Vegetarian Option
To make a vegetarian version of French onion soup, swap the beef broth for vegetable broth. This simple change keeps the soup tasty and rich. For cheese, you can choose a lighter option like mozzarella or even a vegan cheese. These alternatives let you enjoy the soup without missing the classic flavor.
Flavor Boosters
Want to take your soup to the next level? Add a splash of sherry or white wine. This small addition enhances the depth of flavor. You can also infuse your soup with fresh herbs like rosemary or basil. Both herbs add a lovely aroma and fresh taste to each spoonful.
Serving Styles
Serving French onion soup in a bread bowl is a fun twist. The bread soaks up the soup and adds a crunchy texture. You can also try different types of bread. Sourdough or whole grain bread works well and adds unique flavors. Each style makes the soup feel special and keeps it fun!
Storage Info
Refrigeration Tips
To store leftover soup, let it cool first. Then, pour it into an airtight container. Seal it tightly to keep out air. Store the soup in the fridge for up to four days. If you want to keep it longer, freezing is a better choice.
Freezing Instructions
To freeze French onion soup, use freezer-safe containers. Leave some space at the top, as soup expands when frozen. You can freeze it for up to three months. When ready to enjoy, thaw the soup in the fridge overnight.
Reheating Tips
To reheat, pour the soup into a pot. Heat it gently on the stove over low heat. Stir often to keep the flavor intact. If the soup seems thick, add a splash of beef broth or water. For refreshing leftovers, consider adding fresh herbs or a sprinkle of cheese before serving.
FAQs
How long does it take to make Instant Pot French Onion Soup?
The total time to make this soup is about 50 minutes.
- Prep time is 15 minutes.
- Cooking time is 25 minutes under pressure.
- You will need around 10 minutes for natural release.
This soup cooks quickly, thanks to the Instant Pot.
Can I make this soup ahead of time?
Yes, you can make this soup ahead of time.
- Store it in the fridge for up to 3 days.
- Use an airtight container for best results.
For longer storage, freeze it for up to 3 months. Just remember to let it cool before freezing.
What can I substitute for Gruyère cheese?
If you cannot find Gruyère, don't worry! You can use other cheeses like Swiss or mozzarella. Both will melt well and add great flavor. For a dairy-free option, try vegan cheese. This way, everyone can enjoy the soup!
This blog post detailed how to make delicious Instant Pot French Onion Soup. We covered main and additional ingredients, along with step-by-step cooking instructions. I shared tips for the perfect caramelization and serving suggestions to impress. You learned variations like vegetarian substitutes and creative serving styles. Lastly, I offered storage tips to keep your soup fresh.
With this knowledge, you can confidently whip up a tasty batch of soup anytime. Enjoy the flavors and warmth this dish brings.