Go Back
+ servings
A cup full of French onion soup made in a slow cooker.

Slow Cooker French Onion Soup Recipe

Print Recipe
Make mealtime easy! Dish up a rich and beefy soup your family will love. Our slow cooker French onion soup couldn’t be easier!
Course soups
Prep Time 20 minutes
Cook Time 10 hours
Total Time 10 hours 20 minutes
Servings 4 -6 servings
Calories 528
Author Cheryl Najafi

Ingredients

Instructions

  • Turn slow cooker to high and add butter. Add onions, bouillon and thyme the pour wine into slow cooker.
  • Cover and allow to cook 7−8 hours (onions will be soft and dark brown). Pour 2 cans beef consommé and 1 cup water into slow cooker and stir to combine. Cook for 1 hour.
  • Remove thyme stems and test for seasoning. Mix cornstarch and ¼ cup cold water together in small bowl then stir cornstarch mixture into soup. Allow to cook an additional 30 minutes.
  • When ready to serve, preheat oven on broil setting. Arrange individual oven safe bowls on a baking sheet. Ladle soup into bowls, filling to ½" from top. Place a piece of bread on top of each portion of soup and top with shredded cheese. Place under broiler until cheese is melted and bubbly (do not walk away! this will take only about 30 seconds to 1 minute).
  • Serve and enjoy!

Notes

Be sure to use hearty bread so it doesn’t disintegrate in your soup!

Nutrition

Calories: 528kcal | Carbohydrates: 35g | Protein: 25g | Fat: 29g | Saturated Fat: 17g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 6g | Cholesterol: 90mg | Sodium: 1403mg | Potassium: 455mg | Fiber: 3g | Sugar: 8g