Dad's Favorite French Onion Soup Recipe

A rich and deeply flavorful French Onion Soup recipe, perfected for Dad (and you!). This classic comfort food boasts perfectly caramelized onions, a savory broth, and bubbly melted cheese – guaranteed to be a new family favorite. Get ready for a taste of pure deliciousness that's almost as good as a steak!

Prep Time 20 mins
Cook Time 90 mins
Calories 145.5 kcal
Protein 5g
Rating 5.0 (4 Reviews)
Dad's Favorite French Onion Soup 37

Recipe Actions

Share this recipe:

Recipe Author

Chef Forktionary, author of this recipe

Recipe adapted from Food.com. Standardized by Forktionary.

Ingredients for Dad's Favorite French Onion Soup

Cook Smarter with Sous, Your Kitchen Companion

Missing an ingredient for this Dad's Favorite French Onion Soup? Need a perfect wine pairing or a healthy side dish idea? Don't guess—ask Sous! Your AI-powered sous-chef is ready to help you swap ingredients, adjust serving sizes, and discover flavor tips in seconds.

How to Make Dad's Favorite French Onion Soup

  1. Melt 4 tablespoons of butter in a large (6-quart) saucepan over medium heat.
  2. Add 4 pounds of thinly sliced yellow onions, 2 teaspoons of salt, 1 teaspoon of black pepper, and 1 teaspoon of Dijon mustard.
  3. Cook, stirring occasionally, for 45-60 minutes, until the onions are deeply caramelized and golden brown. Reduce heat as needed to prevent burning.
  4. Sprinkle in 4 tablespoons of all-purpose flour and stir until smooth, cooking for 1 minute.
  5. Gradually whisk in 8 cups of beef broth and 1 cup of dry sherry (or white wine).
  6. Bring to a boil, then reduce heat to low, cover, and simmer for 30 minutes, stirring occasionally.
  7. Preheat your broiler.
  8. To serve: Place slices of French baguette (about 1/2 inch thick) in oven-safe bowls. Top each slice with a generous amount of Gruyère cheese (about 1/4 cup per bowl) and Swiss cheese (about 2 tablespoons per bowl).
  9. Ladle the hot soup over the cheese and bread. Broil for 2-3 minutes, or until the cheese is melted, bubbly, and golden brown. Watch carefully to prevent burning.

Nutrition Information (Approximate per serving)

Sodium

27 g

Sugar

14g

Fat

25g

Carbs

2g