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Crockpot French Onion Soup

A close-up of a bowl of crockpot French onion soup topped with a thick slice of toasted bread covered in melted, bubbly cheese.
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Enjoy the rich, savory flavor of classic French onion soup with the ease of your slow cooker. This recipe features deeply caramelized onions in a flavorful broth, topped with crusty bread and melted Gruyere cheese.

Ingredients

Scale
  • 2 lbs yellow onions, thinly sliced
  • 4 cloves garlic, minced
  • 8 cups beef broth
  • 1 cup dry white wine
  • 2 tablespoons Worcestershire sauce
  • 1 teaspoon dried thyme
  • 1 teaspoon black pepper
  • 1/2 teaspoon salt
  • 1 baguette, sliced
  • 8 slices Gruyere cheese
  • 2 tablespoons butter

Instructions

  1. Place sliced onions in your slow cooker.
  2. Add minced garlic, beef broth, white wine, Worcestershire sauce, thyme, pepper, and salt.
  3. Cover and cook on low for 8-10 hours or on high for 4-5 hours, until onions are very tender and caramelized.
  4. Preheat your broiler.
  5. Ladle soup into oven-safe bowls.
  6. Top each bowl with a slice of baguette.
  7. Place 1-2 slices of Gruyere cheese over the bread.
  8. Broil for 2-3 minutes, until cheese is melted and golden brown.
  9. Serve immediately.

Notes

  • For an extra rich flavor, you can deglaze the pot with a splash of brandy before adding the beef broth.
  • If you don’t have oven-safe bowls, you can toast the bread and melt the cheese on a baking sheet and then float it on top of the soup.
  • This soup is a great make-ahead option for weeknight meals.

Nutrition

Find it online: https://delicerecipe.com/crockpot-french-onion-soup/