French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods! // addapinch.com
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4.84 from 6 votes

French Onion Soup

French Onion Soup makes a comforting, classic bowl of soup! Made with caramelized onions a slice of crusty bread and melty, delicious cheese! Includes stovetop and slow cooker methods!
Cook Time1 hr
Total Time1 hr
Course: Main Course, Soup
Cuisine: American, French
Keyword: easy french onion soup, french onion soup recipe, slow cooker french onion soup, the best french onion soup
Servings: 8
Calories: 466kcal
Author: Robyn Stone | Add a Pinch

Ingredients

  • 6 medium yellow onions thinly sliced
  • 4 tablespoons butter
  • 1/2 teaspoon salt
  • 2 tablespoons olive oil
  • 1 clove garlic minced
  • 8 cups beef stock (64-ounces)
  • 1/2 cup dry white wine or chicken stock
  • 8 slices French bread toasted
  • 2 cups Gruyere cheese grated
  • 1/2 cup Parmesan cheese grated

Instructions

French Onion Soup Recipe (Stovetop)

  • Add onions, butter and salt to large Dutch oven with olive oil set on low heat until the onions are browned and caramelized, about 1 hour. Add garlic and heat thoroughly, about one minute. Pour in beef stock and wine (or chicken stock). Stir, cover and allow to simmer over low heat for 30 minutes.
  • When ready to serve, ladle soup into oven proof bowls and top with bread and cheeses. Place on lined baking sheet and under the broiler in the oven until the cheeses have melted and browned lightly, about 8 minutes.

Slow Cooker French Onion Soup Recipe:

  • Add onions, butter and salt to slow cooker. Cook on low setting for 10 hours. 
  • Add garlic, beef stock and wine (or chicken stock). Stir well to combine and cook on low setting for 8 hours. 
  • When ready to serve, ladle soup into oven proof bowls and top with bread and cheeses. Place on lined baking sheet and under the broiler in the oven until the cheeses have melted and browned lightly, about 8 minutes. 

Video

Notes

Make-Ahead French Onion Soup:
Cook French Onion Soup as directed and ladle into oven proof bowls. Cover the bowls and place into the refrigerator for up to 3 days. When ready to serve, preheat the oven, remove the soup from the refrigerator and place into the oven to reheat the soups for 15 minutes. Remove from the oven and top with bread and grated cheeses. Return to the oven and bake as directed. 

Nutrition

Calories: 466kcal | Carbohydrates: 47g | Protein: 25g | Fat: 19g | Saturated Fat: 11g | Cholesterol: 56mg | Sodium: 1234mg | Potassium: 694mg | Fiber: 2g | Sugar: 6g | Vitamin A: 535IU | Vitamin C: 6.4mg | Calcium: 476mg | Iron: 3.3mg