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+ servings
french onion soup in copper plate on white plate with another pot behind and glass of white wine

Classic French Onion Soup

Prep Time: 15 minutes
Cook Time: 20 minutes
Total Time: 35 minutes
Author: Traci
This Classic One-Pot French Onion Soup is home-y, easy to make, ready on about 35 minutes, and is truly SO delicious. It will become your new go-to for dinner during the colder months!



  • In a 6 quart stock pot, melt butter.
  • Add onions and sauté until cooked down and starting to brown.
  • Add wine and cook an additional 5 minutes.
  • Add chicken stock, beef stock, and thyme.
  • Simmer for 15-20 minutes.
  • Ladle into serving bowls.
  • Top with bread slices and cheese.
  • Place under broiler until cheese is melted and edges of bread are toasted.


  • If you don't have homemade chicken stock or beef stock, you can use bullion cubes or your favorite store-bough brand.
  • Dried thyme can be used in place of fresh, but you will need to decrease the amount to about 1/8 teaspoon.
  • Fontina is our favorite with this soup, but you can use any kind of white cheese like it! From Gruyère to a white cheddar.
Expert Tips:
  • Make sure the onions are thinly sliced! I highly recommend using a mandoline to make the slicing easier!
  • Use a white wine with a lot of citrus!
  • This soups keeps and reheats really well.


Serving: 1cup | Calories: 405kcal | Carbohydrates: 28g | Protein: 19g | Fat: 23g | Saturated Fat: 14g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 7g | Trans Fat: 1g | Cholesterol: 75mg | Sodium: 838mg | Potassium: 727mg | Fiber: 4g | Sugar: 13g | Vitamin A: 667IU | Vitamin C: 18mg | Calcium: 313mg | Iron: 1mg