Best 8 Caramelized Onion Soup With Swiss Cheese Basil Croutons Recipes

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Indulge in the symphony of flavors with our caramelized onion soup, a culinary masterpiece that tantalizes the taste buds with its velvety texture and captivating aromas. This classic French soup is elevated with the perfect balance of sweetness from caramelized onions, rich umami from beef broth and white wine, and a touch of acidity from lemon juice. Served piping hot, it's a delightful journey for the senses, especially when paired with toasted Swiss cheese croutons and fresh basil, adding layers of savory and herbaceous notes. Our recipe guide includes three variations: a traditional version, a vegetarian delight, and a gluten-free option, ensuring everyone can savor this heartwarming soup. So, gather your ingredients, let the caramelized onions work their magic, and prepare to embark on a culinary adventure that will leave you craving more.

Check out the recipes below so you can choose the best recipe for yourself!

CLASSIC FRENCH ONION SOUP



Classic French Onion Soup image

Made with perfectly caramelized onions, fresh thyme sprigs, crusty baguette slices and two types of melted cheese right on top!

Provided by Chungah Rhee

Yield 6 servings

Number Of Ingredients 12

1/4 cup unsalted butter
3 pounds (about 5 medium) sweet onions, sliced
2 cloves garlic, minced
1/3 cup dry white wine
6 cups beef stock
4 sprigs fresh thyme
2 bay leaves
2 teaspoons white wine vinegar
Kosher salt and freshly ground black pepper, to taste
12 (3/4-inch-thick) French baguette slices
1 cup shredded Swiss cheese
1 cup shredded Gruyère cheese

Steps:

  • Melt butter in a large stockpot or Dutch oven over medium heat. Add onions, and cook, stirring often, until deep golden brown and caramelized, about 30-40 minutes.* Stir in garlic until fragrant, about 1 minute. Stir in wine, scraping any browned bits from the bottom of the stockpot. Stir in beef stock, thyme and bay leaves. Bring to a boil; reduce heat and simmer, stirring occasionally, until slightly reduced, about 15-20 minutes. Remove and discard thyme sprigs and bay leaves. Stir in white wine vinegar; season with salt and pepper, to taste. Preheat oven to broil. Place baguette slices onto a baking sheet. Place into oven and broil until golden brown on both sides, about 1-2 minutes per side; set aside. Divide soup into ramekins or ovenproof bowls. Place onto a baking sheet. Top with baguette slices to cover the surface of the soup completely; sprinkle with cheeses. Place into oven and broil until golden brown and cheeses have melted; about 2 minutes. Serve immediately.

CARAMELIZED ONION SOUP WITH SWISS CHEESE & BASIL CROUTONS



Caramelized Onion Soup With Swiss Cheese & Basil Croutons image

This delish recipe comes from Southern Living. The original recipe said it serves 8, but I think it serves 4-6. It's just DH and I, so I cut the recipe in half and use 2 large oven-safe soup mugs. The amount is perfect for dinner plus seconds! Enjoy!

Provided by KPD123

Categories     Onions

Time 1h

Yield 4-6 serving(s)

Number Of Ingredients 14

6 medium onions, thinly sliced
4 garlic cloves, minced
1/4 cup extra virgin olive oil
1 tablespoon butter
1 teaspoon cracked black pepper
1 tablespoon fresh thyme or 1 teaspoon dried thyme
1/2 cup dry red wine
8 cups water
3 tablespoons beef bouillon granules (or to taste)
1 cup swiss cheese, shredded
2 tablespoons fresh basil or 1 teaspoon dried basil
2 tablespoons mayonnaise
1/2 teaspoon cracked black pepper (to taste)
1 sourdough baguette, sliced on the bias

Steps:

  • Sauté onions and garlic in oil and butter in a large soup pot over medium heat until soft and golden brown, about 20-25 minutes.
  • Add black pepper and thyme to onions. Cook 1 minute. Then add red wine, cook about 1 minute while stirring and scraping any bits off the bottom of the pan.
  • Add water and bouillon to pot. Bring soup to a boil. Reduce heat to low. Cover and simmer, stirring occasionally for 20 minutes. (Double check to see if it needs any salt and pepper added to taste).
  • In a bowl, combine cheese, basil, pepper and mayo. Spread over one side of each bread slice.
  • Ladle soup into oven-safe bowls. Top each soup bowl with bread, cheese side up, making sure to cover entire soup surface with a layer of bread. (My soup mugs are quite large, so I use 2-3 baguette slices per serving).
  • Broil 2-3 minutes until the cheese begins to melt and brown a bit.

Nutrition Facts : Calories 377.9, Fat 26.5, SaturatedFat 8.9, Cholesterol 34.4, Sodium 149.4, Carbohydrate 22.4, Fiber 2.7, Sugar 8.1, Protein 9.3

CARAMELIZED ONION SOUP WITH BLUE CHEESE CROUTONS



Caramelized Onion Soup With Blue Cheese Croutons image

Classic onion soup gets even better with caramelized onions, silky cream and zesty croutons for the finishing touch. It's worth the time it takes to cook the onions for the wonderful depth of flavor.

Provided by Chef mariajane

Categories     Onions

Time 1h

Yield 4-6 serving(s)

Number Of Ingredients 11

2 tablespoons butter
4 onions, halved and thinly sliced
1/2 teaspoon dried thyme
salt and pepper
2 garlic cloves, minced
1/4 cup dry sherry or 1/4 cup red wine
4 cups reduced beef stock
1 cup water
1 cup 35% cream
thick slices baguette
1/4 cup crumbled canadian blue cheese, softened

Steps:

  • In pot, melt butter over medium heat; add onions, thyme and 1/4 teaspoons each salt and pepper and sauté for 2 minutes or until starting to soften. Reduce heat to medium-low, cover and cook, stirring often, for about 20 minutes or until onions are very soft. Uncover and cook, stirring often, for 15 to 20 minutes or until caramelized. Increase heat to medium-high; add garlic and sauté for 1 minute. Add sherry and bring to a boil, scraping up bits stuck to pot. Add beef stock and water and bring to a boil. Reduce heat and boil gently for about 10 minutes or until flavours are blended.
  • CROUTONS:.
  • Preheat broiler. On a baking sheet, lightly toast both sides of baguette slices. Spread one side with softened blue cheese.
  • To serve, stir cream into hot soup and season to taste with salt and pepper. Ladle soup into ovenproof soup bowls . Float one crouton in each bowl and broil for about 2 minutes, or until cheese is melted. Serve immediately.

Nutrition Facts : Calories 383, Fat 27.3, SaturatedFat 17.1, Cholesterol 87.9, Sodium 969.9, Carbohydrate 15.8, Fiber 1.6, Sugar 5.4, Protein 7.1

CARAMELIZED ONION SOUP WITH ONIONS TO SPARE



Caramelized Onion Soup with Onions to Spare image

This recipe makes more caramelized onions than you need. Set some aside before turning the rest into soup, and use them on toast, with pasta, or in omelets.

Provided by Martha Stewart

Categories     Food & Cooking     Soups, Stews & Stocks     Soup Recipes

Time 1h45m

Number Of Ingredients 13

1/4 cup extra-virgin olive oil, plus more for serving
3 tablespoons unsalted butter
4 to 6 large yellow onions, thinly sliced (about 9 cups)
1 teaspoon sugar
Coarse salt and ground pepper
4 sprigs thyme
1 dried bay leaf
1 teaspoon all-purpose flour
1 tablespoon sherry, white wine, or brandy
4 cups beef broth
Toasted stale rustic bread
1 garlic clove, peeled
Fresh parsley

Steps:

  • In a large Dutch oven or other heavy pot, heat oil and 2 tablespoons butter over medium-high. Add onions, sugar, 2 teaspoons salt, thyme, and bay leaf. Reduce heat to medium-low and cook, stirring frequently to scrape up any browned bits, until onions are deep golden brown and have a jam-like consistency, about 1 hour. If onions begin to stick, reduce heat and stir in 1 tablespoon water.
  • Discard herbs. Reserve 1/2 cup onions (leaving 1 3/4 cups in pot). Stir in 1 tablespoon butter, flour, and sherry and cook until butter is melted, 30 seconds. Add broth, increase heat, and simmer 15 minutes. Season to taste with salt and pepper. Rub bread with garlic, then place in bowls and ladle soup on top. Drizzle with oil and sprinkle with parsley.

Nutrition Facts : Calories 255 g, Fat 19 g, Fiber 3 g, Protein 6 g, SaturatedFat 6 g

CARAMELISED ONION & BARLEY SOUP WITH CHEESE CROUTONS



Caramelised onion & barley soup with cheese croutons image

Nutty and nutritious barley adds real substance to this twist on classic French onion soup

Provided by Good Food team

Categories     Dinner, Main course

Time 45m

Number Of Ingredients 10

1 tbsp olive oil
2 medium onions , thinly sliced
2 garlic cloves , thinly sliced
6 thyme sprigs, chopped
good pinch sugar
500ml vegetable stock
60g barley
60g cavolo nero or kale , thick stalks discarded and leaves sliced
4 slices baguette , toasted
4 tbsp grated gruyère cheese

Steps:

  • Heat the oil in a saucepan, then add the onions, garlic, thyme, sugar and a good pinch of salt. Cook on a medium-low heat for 15-20 mins or until golden coloured. Add the stock and simmer for a further 10 mins.
  • In a separate large saucepan of salted boiling water, cook the barley for 15 mins, adding the cavolo nero or kale for the final 3 mins of cooking. Drain and rinse under cold water, then add to the soup and warm through.
  • Heat the grill. Top the toasted bread with cheese and place under the grill until it's bubbly and melted. Serve in 2 large bowls with the cheesy croutons on top.

Nutrition Facts : Calories 434 calories, Fat 15 grams fat, SaturatedFat 5 grams saturated fat, Carbohydrate 59 grams carbohydrates, Sugar 13 grams sugar, Fiber 6 grams fiber, Protein 15 grams protein, Sodium 1.4 milligram of sodium

CREAMY SWISS ONION SOUP



Creamy Swiss Onion Soup image

It was a cool spring day when I came up with this sweet and creamy variation of traditional baked French onion soup. I top individual bowls with toasty buttered croutons and a sprinkling of Swiss cheese, then pop them under the broiler. The rich results are delightful! - I. MacKay Starr, North Saanich, British Columbia

Provided by Taste of Home

Categories     Lunch

Time 45m

Yield 4 servings.

Number Of Ingredients 10

7 tablespoons butter, divided
1-1/2 cups cubed day-old bread
3 large onions, quartered and thinly sliced
1-1/2 cups water
4-1/2 teaspoons chicken bouillon granules
1/4 cup all-purpose flour
1-3/4 cups milk, divided
1-1/2 cups shredded Swiss cheese, divided
Pepper to taste
Fresh minced chives or parsley

Steps:

  • Melt 3 tablespoons of butter; toss with bread cubes. Place on a lightly greased baking sheet. Bake at 350° for 7 minutes; turn and bake 7 minutes longer or until toasted. , Meanwhile, in a large saucepan, saute onions in remaining butter until lightly browned, about 12 minutes. Stir in water and bouillon; bring to a boil. Reduce heat; cover and simmer for 15 minutes. , Combine flour and 1/2 cup milk until smooth; gradually stir into onion mixture. Stir in remaining milk. Bring to a boil; boil for 2 minutes, stirring until thickened. Reduce heat to low; stir in 3/4 cup Swiss cheese and pepper. , Ladle into four ovenproof bowls; sprinkle with reserved croutons and remaining cheese. Broil 4 in. from the heat until cheese is melted and bubbly. Garnish with chives.

Nutrition Facts :

CREAMY CARAMELIZED-ONION SOUP



Creamy Caramelized-Onion Soup image

Slow-cooked onions take on a whole new color and flavor. They top a pureed soup made with caramelized leeks, shallots, and more onions -- plus cream and vermouth.

Provided by Martha Stewart

Categories     Food & Cooking     Soups, Stews & Stocks     Soup Recipes

Yield Makes 8 cups

Number Of Ingredients 9

6 tablespoons unsalted butter
1 1/4 pounds (3 to 4) leeks, white and pale-green parts only, rinsed well and coarsely chopped
5 garlic, thinly sliced
7 large shallots, about 14 ounces, thinly sliced
2 large Vidalia onions, about 20 ounces, cut into 1/4-inch-thick slices
3/4 cup dry white vermouth
4 cups homemade or low-sodium store-bought chicken stock
Coarse salt
1 cup heavy cream

Steps:

  • Melt 4 tablespoons butter in a large saucepan over medium heat. Add leeks, garlic, shallots, and half of the onions. Cook, stirring occasionally, until vegetables are very soft and translucent, about 10 minutes. Reduce the heat to medium-low, and cook, stirring occasionally, until vegetables are deep golden brown, about 25 minutes.
  • Add vermouth, stock, and 1 teaspoon salt. Bring to a boil. Reduce heat to medium-low. Simmer, stirring occasionally, 15 minutes. Let cool. Puree onion mixture in batches in a blender until smooth, about 3 minutes per batch. Set aside.
  • Meanwhile, melt remaining 2 tablespoons butter in a medium skillet over medium-low heat. Add remaining onion. Cook, stirring occasionally, until onion is very soft and golden brown, about 45 minutes. Cover, and set aside.
  • Return onion puree to saucepan. Stir in cream. Reheat over medium heat, stirring, until heated through but not boiling. Season with salt, if desired. Serve, topped with caramelized onions.

CREAMY CARAMELIZED ONION SOUP



Creamy Caramelized Onion Soup image

I love caramelized onions. I love cream soups. Why not combine the two? As a side note, caramelizing the onions takes a while. You don't want to burn them, you want to caramelize them. Be patient! :]

Provided by dysonr88

Categories     Potato

Time 1h30m

Yield 6 serving(s)

Number Of Ingredients 13

2 medium white onions, chopped
6 tablespoons butter
1 tablespoon garlic, minced
1/4 cup flour
2 cups milk, warm
4 cups vegetable broth
2 tablespoons Worcestershire sauce
2 tablespoons balsamic vinegar
1 teaspoon salt
1 teaspoon pepper
1 large parsnip, chopped
4 ounces portabella mushrooms, chopped
3 red potatoes, chopped

Steps:

  • In a medium pot, melt the butter over medium heat. Add onion and garlic. Stir continuously until onions are caramelized (brown, but not burned), about 30 minutes or more.
  • Whisk in flour, cook for 2 minutes.
  • Add milk or half-and-half, whisk until smooth.
  • Add balsamic vinegar, Worcestershire sauce, salt, pepper, and broth. Let simmer for 20 minutes.
  • Add vegetables, mix thoroughly, and let simmer for 20 minutes, or until vegetables are tender.
  • Turn off heat and let it cool for a few minutes.
  • Puree soup in batches until at least half of the soup is blended. Mix thoroughly.
  • Cook over medium heat until hot.

Nutrition Facts : Calories 278.4, Fat 14.8, SaturatedFat 9.2, Cholesterol 41.9, Sodium 608.3, Carbohydrate 31.6, Fiber 3, Sugar 4.8, Protein 6.3

Tips:

  • Use sweet onions: Sweet onions, such as Vidalia or Walla Walla, caramelize better and have a milder flavor than yellow or white onions.
  • Caramelize the onions slowly and patiently: Caramelizing onions takes time, so don't rush the process. Cook the onions over low heat, stirring occasionally, until they are deeply golden brown and very soft.
  • Use a good quality beef broth: The beef broth is the base of the soup, so it's important to use a good quality broth. Look for a broth that is made with real beef bones and has a rich, flavorful taste.
  • Don't be afraid to experiment with different cheeses: While Gruyère and Swiss are the classic cheeses for French onion soup, you can also use other types of cheese, such as cheddar, mozzarella, or Fontina.
  • Make sure the croutons are crispy: The croutons add a nice crunch to the soup, so make sure they are crispy before adding them to the soup.

Conclusion:

French onion soup is a classic comfort food that is perfect for a cold winter day. It is rich, flavorful, and easy to make. With a few simple tips, you can make a delicious French onion soup that your family and friends will love. Serve it with a side of crusty bread and a glass of red wine for a truly memorable meal.

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