Yield: 8

Classic Slow Cooker French Onion Soup Recipe

A slow cooker French onion soup recipe is ideal for a rich and flavorful soup as a starter for any meal. Set and forget this to cook all day and serve for dinner.

Prep Time 10 minutes
Cook Time 10 hours
Total Time 10 hours 10 minutes

Ingredients

  • 2 pounds white onions, thinly sliced
  • 3 sprigs fresh thyme
  • 2 garlic cloves, minced
  • 1 bay leaf
  • 3 tablespoons unsalted butter
  • 1 tablespoon olive oil
  • 5 cups beef broth
  • 1 cup croutons
  • 1 cup shredded Gruyere cheese

Instructions

  1. In a 6-quart slow cooker, place the onions, thyme, garlic, bay leaf, butter, olive oil, salt, and black pepper. Stir together. White onions in black slow cooker
  2. Cover with the lid and cook on high heat for 6 to 8 hours, stirring every few hours. The onions should be soft and caramelized. Browned but not burned.
  3. Add the beef broth and stir to combine. Continue cooking for an additional 3 hours on high heat. Metal spoon of soup above black slow cooker
  4. To serve, pour into oven-safe ramekins and top with croutons and shredded Gruyere cheese.
  5. Broil for 1 to 2 minutes until cheese has melted and is just browning. Ramekins on green table filled with french onion soup

Notes

Serve with toasted french bread instead of croutons if desired.

Nutrition Information:

Yield:

8

Serving Size:

1
Amount Per Serving: Calories: 211Total Fat: 13gSaturated Fat: 7gTrans Fat: 0gUnsaturated Fat: 6gCholesterol: 31mgSodium: 740mgCarbohydrates: 15gFiber: 2gSugar: 6gProtein: 9g