French Onion Soup with Gruyère Croutons

Name: French Onion Soup with Gruyère Croutons
Prep time: 15 min
Cook time: 60 min
Total time: 75 min
Yield: 4 servings
Cuisine: French
Ingredients: 4 medium yellow onions (thinly sliced); 2 tablespoons unsalted butter; 2 tablespoons olive oil; 4 cups beef broth (low sodium); 1 cup chicken broth (low sodium); 1/2 cup dry white wine; 1 teaspoon sugar; 1 teaspoon salt (to taste); 1/4 teaspoon black pepper (freshly ground); 1 tablespoon all-purpose flour (optional, for thickening); 2 teaspoons fresh thyme (chopped); 1 tablespoon balsamic vinegar; 1 baguette French bread (sliced); 1 cup Gruyère cheese (grated); 2 tablespoons olive oil

StandardFrenchDinnerComfort FoodSavoryClassic

⏱️ 15m PREP

🔥 60m COOK

👥 4 SERVINGS

⚡ 350 CAL/SERV

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Overview

A rich and savory classic French soup featuring caramelized onions in a flavorful broth, topped with crispy Gruyère croutons.

Macronutrients per serving

grams

Protein

15.0g 22%

Fat

18.0g 26%

Carbs

35.0g 51%

Rich in nutrients

🔺 Calcium

20% DV

Essential for healthy bones and teeth

☀️ Vitamin A

10% DV

Supports vision and immune function

🔺 Iron

15% DV

Important for oxygen transport in the blood

☀️ Vitamin B6

15% DV

Involved in protein metabolism

💧 Omega-3

3% DV

Supports heart health

Ingredients

Main Ingredients

4 medium yellow onions thinly sliced
2 tablespoons unsalted butter
2 tablespoons olive oil
4 cups beef broth low sodium
1 cup chicken broth low sodium
1/2 cup dry white wine
1 teaspoon sugar
1 teaspoon salt to taste
1/4 teaspoon black pepper freshly ground
1 tablespoon all-purpose flour optional, for thickening
2 teaspoons fresh thyme chopped
1 tablespoon balsamic vinegar

Gruyère Croutons

1 baguette French bread sliced
1 cup Gruyère cheese grated
2 tablespoons olive oil

Instructions

1 In a large pot, heat olive oil and butter over medium heat. Add the sliced onions and cook, stirring occasionally, until they are caramelized and golden brown, about 25-30 minutes.
2 Sprinkle sugar over the onions to enhance their sweetness, then add flour to thicken the soup slightly, if desired. Stir well to combine.
3 Pour in the dry white wine, scraping up any browned bits from the bottom of the pot. Allow the wine to reduce by half.
4 Add the beef broth, chicken broth, thyme, salt, and pepper to the pot. Bring the mixture to a simmer and let it cook for 30 minutes to develop the flavors.
5 While the soup simmers, preheat the oven to 400°F (200°C). Arrange the baguette slices on a baking sheet, brush with olive oil, and top with grated Gruyère cheese.
6 Bake the croutons in the oven for 10 minutes, or until the cheese is melted and bubbly.
7 Stir in the balsamic vinegar into the soup and adjust seasoning with additional salt and pepper if needed.
8 Ladle the soup into bowls and top with Gruyère croutons just before serving.