Name: Hearty French Onion Lentil Soup
Ingredients: 2 Tbsp. butter: Adds richness and helps to caramelize the onions.; 2 Tbsp. extra-virgin olive oil: Enhances flavor and provides a healthy fat source.; 3 large yellow onions, thinly sliced: The star ingredient of this dish, providing sweetness and depth when caramelized.; 4 garlic cloves, minced: Adds aromatic flavor that complements the onions.; 2 tsp. lower sodium tamari: Offers umami flavor without overwhelming saltiness, making it suitable for low-sodium diets.; Kosher salt and cracked black pepper to taste: Essential for seasoning and enhancing the natural flavors of the soup.; 1 cup petite lentils (French or black): Provides protein and fiber, creating a hearty texture in the soup.; 2 quarts low sodium chicken broth: The base of the soup, delivering depth of flavor without the excess sodium.; 6 to 8 sprigs fresh thyme (or 1 tsp. dried): Imparts a fragrant herbal note that elevates the dish.; 1 bay leaf: Adds complexity to the broth. Remember to remove it before serving.; 2 Tbsp. sherry vinegar: Provides a balanced acidity that sharpens the flavors of the soup.; 8 to 12 slices French bread: The perfect vehicle to carry the soup’s flavors, adding texture and warmth.; 1 1/2 cups grated Gruyère cheese: The indulgent topping that melts beautifully on the bread, creating a delightful contrast to the soup.

As the weather gets colder, nothing is more comforting than a hearty bowl of soup. French Onion Lentil Soup combines the sweet, rich flavors of caramelized onions with the earthy texture of lentils, creating a dish that is not only delicious but also nourishing. With the added indulgence of cheesy baguette slices topped with gooey Gruyère cheese, this soup is perfect for a cozy night in or as a starter for a fancy dinner. In this article, we’ll explore the origins of this delightful recipe, break down the key ingredients, and provide step-by-step instructions for making this culinary masterpiece. By the end, you’ll be equipped with all the knowledge you need to create this bowl of warmth and comfort in your own kitchen.

Understanding the Recipe

French Onion Soup has long been a staple in French cuisine, celebrated for its comforting and sophisticated flavors. Traditionally, it features caramelized onions, a flavorful broth, and crusty bread, often topped with melted cheese. The lentils in this version not only add heartiness but also enhance the nutritional profile of the dish by providing protein and fiber. This adaptation reflects a more contemporary approach to the classic, allowing even more people to enjoy its comforting goodness. Many have fond memories of this dish shared with family or friends, whether at a bistro in Paris or on a cold evening at home. This soup honors those nostalgic moments while providing a delightful twist that makes it unique and special.

Ingredient Breakdown

Let’s delve into the ingredients that make French Onion Lentil Soup so flavorful and satisfying:

2 Tbsp. butter: Adds richness and helps to caramelize the onions.
2 Tbsp. extra-virgin olive oil: Enhances flavor and provides a healthy fat source.
3 large yellow onions, thinly sliced: The star ingredient of this dish, providing sweetness and depth when caramelized.

4 garlic cloves, minced: Adds aromatic flavor that complements the onions.
2 tsp. lower sodium tamari: Offers umami flavor without overwhelming saltiness, making it suitable for low-sodium diets.
Kosher salt and cracked black pepper to taste: Essential for seasoning and enhancing the natural flavors of the soup.

1 cup petite lentils (French or black): Provides protein and fiber, creating a hearty texture in the soup.
2 quarts low sodium chicken broth: The base of the soup, delivering depth of flavor without the excess sodium.
6 to 8 sprigs fresh thyme (or 1 tsp. dried): Imparts a fragrant herbal note that elevates the dish.

1 bay leaf: Adds complexity to the broth. Remember to remove it before serving.
2 Tbsp. sherry vinegar: Provides a balanced acidity that sharpens the flavors of the soup.
8 to 12 slices French bread: The perfect vehicle to carry the soup’s flavors, adding texture and warmth.

1 1/2 cups grated Gruyère cheese: The indulgent topping that melts beautifully on the bread, creating a delightful contrast to the soup.

When making this recipe, it’s important to use high-quality ingredients for the best results. If you have dietary restrictions, there are various alternatives you can try. For a vegan version, consider substituting the butter with vegan margarine, using vegetable broth instead of chicken broth, and omitting the cheese or using a plant-based cheese alternative. Always ensure your lentils are fresh to maintain their texture.

Step-by-Step Instructions

Now that you have a good understanding of the ingredients, let’s walk through the steps to make your French Onion Lentil Soup:

Prepare the onions: In a large pot, melt 2 Tbsp. butter and 2 Tbsp. extra-virgin olive oil over medium heat. Once melted, add 3 large yellow onions (thinly sliced) and a pinch of kosher salt. Cook the onions slowly, stirring occasionally, until they are golden brown and caramelized, which will take about 40 minutes. This step is crucial for achieving the deep flavor characteristic of French onion soup.
Add garlic and tamari: When the onions reach a caramelized state, stir in 4 minced garlic cloves and 2 tsp. lower sodium tamari. Allow this to cook for another 2 minutes, just until the garlic becomes fragrant.
Combine ingredients: Add 1 cup petite lentils, 2 quarts low sodium chicken broth, 6 to 8 sprigs fresh thyme (or 1 tsp. dried thyme), 1 bay leaf, and cracked black pepper to taste into the pot. Stir well to combine before bringing the mixture to a boil.

Simmer the soup: Once boiling, reduce the heat and cover the pot with a lid. Allow the soup to simmer for about 30 minutes, or until the lentils are tender. Be sure to check occasionally to prevent sticking. After simmering, discard the bay leaf and thyme sprigs, then season with additional salt and pepper to taste.
Prepare the cheesy topping: While the soup simmers, you can prepare the French bread. Place 8 to 12 slices of French bread on a baking sheet, and when the soup is nearly done, broil the bread in the oven until lightly toasted. Keep a close eye on it to avoid burning.
Broil the soup: To finish, ladle the soup into oven-safe bowls, place the toasted bread on top, and sprinkle 1 1/2 cups grated Gruyère cheese over each bowl. Broil the bowls in the oven for 2-4 minutes, or until the cheese is melted and bubbly.

As you prepare this dish, pay attention to visual and textural cues such as the color of the onions and the consistency of the broth to help ensure the best results.

Variations and Customizations

One of the joys of cooking is the ability to adapt recipes to suit your tastes and dietary needs. Here are a few suggestions for customizing French Onion Lentil Soup:

Vegan Option: Substitute the butter for a vegan alternative, and use vegetable broth instead of chicken broth. You can also skip the cheese or find a suitable plant-based cheese to maintain that cheesy topping.

Extra Veggies: For added nutrition, consider incorporating vegetables like carrots, celery, or spinach into the soup as it simmers.
Herbs and Spices: Experiment with different herbs such as rosemary or bay leaves for a unique flavor profile. You can also add a touch of smoked paprika for a delightful twist.
Grain Alternatives: While lentils are the star here, you can try using quinoa or chickpeas for a different texture in the soup.

Each of these variations allows you to make the recipe your own while still enjoying the comforting essence of this warm soup.

Serving Suggestions

This delightful French Onion Lentil Soup is versatile and can be served in various ways.

Garnish: Consider garnishing the soup with additional fresh thyme or a sprinkle of cracked black pepper before serving for a pop of color and flavor.

Accompaniments: Pair the soup with a light salad featuring citrus vinaigrette or a charcuterie board with cheeses and cured meats for a full meal experience.
Beverage Pairing: A glass of Chardonnay or a light-bodied red wine complements the richness of the soup beautifully, enhancing your dining experience.
Occasions: This soup is perfect for family dinners, holiday gatherings, or a cozy night in with friends, making it a versatile dish to have in your repertoire.

Tips for Success

To achieve the best results when making French Onion Lentil Soup, keep these tips in mind:

Patience is Key: Allowing the onions to caramelize properly is crucial for the soup’s flavor. Don’t rush this step; the sweetness of nicely caramelized onions cannot be overstated!
Texture Check: Be sure not to overcook the lentils, as they should be tender but still hold their shape.

Storing Leftovers: If you have any leftover soup, store it in the fridge without the bread and cheese for up to 4 days. Reheat it on the stovetop and then add fresh bread and cheese before broiling.
Freezing Instructions: You can freeze the soup for future meals. Just portion it into airtight containers and label them. It’s best used within 2-3 months for optimal flavor.

FAQs

Here are some frequently asked questions about French Onion Lentil Soup:

Can I substitute the lentils?
Yes, if you prefer, you can use other legumes like chickpeas or even grains like rice or quinoa, but keep in mind the cooking times may vary.
How do I store the soup?
Store the soup in an airtight container in the refrigerator for up to 4 days. You can also freeze it for longer storage.
Can I make this soup ahead of time?
Absolutely! The flavors meld as it sits, making it even tastier the next day. Just add the bread and cheese shortly before serving.

What can I substitute for Gruyère cheese?
If Gruyère isn’t available, you can use Swiss cheese or a combination of mozzarella and Parmesan for a different but delightful flavor.

Conclusion

French Onion Lentil Soup is a delicious and hearty dish that brings warmth and comfort to any table. With its rich flavors and satisfying texture, this recipe is a perfect way to nourish yourself and your loved ones during the colder months. By following the simple steps and tips outlined in this article, you can create a show-stopping dish that is sure to impress. Don’t hesitate to adapt it to your taste, share it with family and friends, and enjoy the beauty of homemade cooking. We encourage you to try this recipe in your own kitchen and discover the joy it brings, whether through comments or social media. Embrace the comfort of this soup, and let it become a favorite in your culinary repertoire!

Hearty French Onion Lentil Soup

Author: Alyssa

Print Recipe

Description

Savor Hearty French Onion Lentil Soup—rich caramelized onions, protein-packed lentils, and melted cheese for a comforting and flavorful main dish.

Ingredients

Scale

2 Tbsp. butter: Adds richness and helps to caramelize the onions.
2 Tbsp. extra-virgin olive oil: Enhances flavor and provides a healthy fat source.

3 large yellow onions, thinly sliced: The star ingredient of this dish, providing sweetness and depth when caramelized.
4 garlic cloves, minced: Adds aromatic flavor that complements the onions.
2 tsp. lower sodium tamari: Offers umami flavor without overwhelming saltiness, making it suitable for low-sodium diets.

Kosher salt and cracked black pepper to taste: Essential for seasoning and enhancing the natural flavors of the soup.
1 cup petite lentils (French or black): Provides protein and fiber, creating a hearty texture in the soup.
2 quarts low sodium chicken broth: The base of the soup, delivering depth of flavor without the excess sodium.

6 to 8 sprigs fresh thyme (or 1 tsp. dried): Imparts a fragrant herbal note that elevates the dish.
1 bay leaf: Adds complexity to the broth. Remember to remove it before serving.
2 Tbsp. sherry vinegar: Provides a balanced acidity that sharpens the flavors of the soup.

8 to 12 slices French bread: The perfect vehicle to carry the soup’s flavors, adding texture and warmth.
1 1/2 cups grated Gruyère cheese: The indulgent topping that melts beautifully on the bread, creating a delightful contrast to the soup.

Instructions

Prepare the onions: In a large pot, melt 2 Tbsp. butter and 2 Tbsp. extra-virgin olive oil over medium heat. Once melted, add 3 large yellow onions (thinly sliced) and a pinch of kosher salt. Cook the onions slowly, stirring occasionally, until they are golden brown and caramelized, which will take about 40 minutes. This step is crucial for achieving the deep flavor characteristic of French onion soup.

Add garlic and tamari: When the onions reach a caramelized state, stir in 4 minced garlic cloves and 2 tsp. lower sodium tamari. Allow this to cook for another 2 minutes, just until the garlic becomes fragrant.
Combine ingredients: Add 1 cup petite lentils, 2 quarts low sodium chicken broth, 6 to 8 sprigs fresh thyme (or 1 tsp. dried thyme), 1 bay leaf, and cracked black pepper to taste into the pot. Stir well to combine before bringing the mixture to a boil.
Simmer the soup: Once boiling, reduce the heat and cover the pot with a lid. Allow the soup to simmer for about 30 minutes, or until the lentils are tender. Be sure to check occasionally to prevent sticking. After simmering, discard the bay leaf and thyme sprigs, then season with additional salt and pepper to taste.

Prepare the cheesy topping: While the soup simmers, you can prepare the French bread. Place 8 to 12 slices of French bread on a baking sheet, and when the soup is nearly done, broil the bread in the oven until lightly toasted. Keep a close eye on it to avoid burning.
Broil the soup: To finish, ladle the soup into oven-safe bowls, place the toasted bread on top, and sprinkle 1 1/2 cups grated Gruyère cheese over each bowl. Broil the bowls in the oven for 2-4 minutes, or until the cheese is melted and bubbly.

As you prepare this dish, pay attention to visual and textural cues such as the color of the onions and the consistency of the broth to help ensure the best results.