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Slow Cooker French Onion Soup

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Slow Cooker French Onion Soup

If you love French onion soup but don’t love the time it takes to stand over a stovetop caramelizing onions for hours — this recipe is your solution. Using a slow cooker allows the onions to caramelize slowly and naturally, infusing the broth with that signature depth and sweetness.

Topped with crusty bread and bubbling melted Gruyère, this cozy classic is pure comfort in a bowl — with minimal effort.


📝 Ingredients

  • 4 large onions, thinly sliced

  • 2 tablespoons butter

  • 1 teaspoon sugar

  • 1½ teaspoons salt

  • 2 quarts (8 cups) low- or no-sodium beef broth

  • ¼ cup dry sherry

  • 2 sprigs fresh thyme (or ½ tsp dried thyme)

  • Freshly ground black pepper, to taste

  • Sliced French bread or croutons

  • 8 oz Gruyère cheese, sliced or shredded (Swiss is a good substitute)


👩‍🍳 Instructions

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