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Potluck French Onion Soup

Potluck French Onion Soup

A rich and flavorful French onion soup perfect for potlucks. Caramelized onions simmered in a hearty beef broth, topped with toasted bread and melted Gruyère cheese.
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Prep Time: 20 minutes
Cook Time: 1 hour
Total Time: 1 hour 20 minutes
Servings: 6
Calories: 120kcal

Ingredients
 

Main Ingredients

  • 4 cups yellow onions
  • 4 cups beef broth preferably low sodium
  • 2 tbsp unsalted butter
  • 1 tbsp olive oil
  • 1 tsp sugar helps caramelize onions
  • 0.25 cup dry white wine optional
  • 6 slices baguette bread toasted
  • 1.5 cups Gruyère cheese shredded
  • 0.5 tsp salt
  • 0.25 tsp black pepper freshly ground

Instructions

Preparation Steps

  • Slice the onions thinly and set aside.
  • Melt butter with olive oil in a large pot over medium heat. Add onions and sugar, cook slowly until caramelized, about 40 minutes, stirring occasionally.
  • Add salt and pepper to the onions, then pour in white wine. Cook until wine reduces by half.
  • Add beef broth and bring to a simmer. Let cook gently for 15 minutes.
  • Preheat the oven broiler. Ladle soup into oven-safe bowls, top each with toasted baguette slices and shredded Gruyère cheese.
  • Place bowls on a baking sheet and broil until cheese melts and turns golden brown, about 3-5 minutes. Serve hot.

Notes

For best flavor, slowly caramelize onions and use a good quality Gruyère cheese. Wine adds depth but can be omitted.