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close up shot of a bowl of onion soup

French Onion Soup

French Onion Soup is a beef-based soup filled with sweet soft cooked onions. Its' topped with a cheesy baguette crouton.
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Course: Soup
Cuisine: American/French
Keyword: comfort food, soup
Prep Time: 15 minutes
Cook Time: 1 hour 20 minutes
Total Time: 1 hour 35 minutes
Servings: 4 large bowls
Author: Laura Franco

Ingredients 

  • 5-6 onions (when sliced will yield 8 cups)
  • 3 tbsp butter
  • 1 tbsp extra virgin olive oil
  • 6 cups beef stock
  • 1 tbsp Dijon mustard
  • salt and pepper to tasted
  • 1 small baguette
  • 1 tbsp extra virgin olive oil
  • 1/2 cup grated gruyere cheese

Instructions

  • Slice the onions in half and then in thin strips.
  • Place butter and olive oil in a stove-top pan or Dutch oven and heat until melted.
  • Add onions and cook on medium for about 20 minutes, stirring occasionally.
  • Add beef broth and Dijon mustard.
  • Add salt and pepper to taste.
  • Bring it to a boil, cover it, and reduce it to a simmer for 1 hour.
  • Slice the baguette into long pieces.
  • Brush the slices of baguette with the olive oil and toast them in a 350° oven until they begin to brown.
  • Top them each with the gruyere cheese and return them to the oven until the cheese is melted and bubbly.
  • To serve, scoop soup into large bowls and serve with the cheesy crouton bread.

Notes

Krazy Kitchen Mom Tips
  • Place the onions in the freezer for 5-10 minutes before slicing to help stop your eyes from tearing.
  • The recipe calls for 8 cups of sliced onions which may seem like a lot. But onions, like fresh spinach, cook down and reduce significantly.
  • Use a kitchen tong to stir onions in the soup pot.