Slow Cooker French Onion Soup

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Introduction:

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Slow Cooker French Onion Soup is a delicious, comforting classic that brings rich, caramelized onions and a flavorful beefy broth together, all topped with a cheesy, crispy bread topping. This slow cooker version allows the onions and broth to slowly meld together, creating a deep, savory flavor that’s perfect for any cozy dinner. Best of all, it’s incredibly easy to prepare—just set it up in the morning, and come home to a warm, comforting meal.

Ingredients:

  • 3 large white onions, sliced
  • 3 tablespoons butter
  • 2 tablespoons brown sugar
  • 64 oz beef broth (reduced sodium recommended)
  • 1 tablespoon Worcestershire sauce
  • 1 clove garlic, minced
  • 1/3 cup dry sherry (optional)
  • 4 sprigs fresh thyme (or 1 teaspoon dried thyme)
  • 1 bay leaf
  • 8 slices dry French bread
  • 3/4 cup shredded Gruyere cheese
  • 1/2 cup shredded Emmental cheese
  • 6 tablespoons shredded Parmesan cheese

Instructions:

  1. Caramelize the Onions:
    • In a large non-stick pan, cook the onions, butter, and brown sugar over medium-low heat until the onions turn golden and caramelized, about 20 minutes.
  2. Add Ingredients to the Slow Cooker:
    • Transfer the caramelized onions to the slow cooker.
    • Add the beef broth, Worcestershire sauce, garlic, sherry (if using), thyme, and bay leaf.
    • Stir everything together and cover the slow cooker. Cook on low for 6-8 hours.
  3. Prepare the Bread and Cheese:
    • About 10 minutes before serving, slice and dry out the French bread by placing it in the oven at 300°F for 5-7 minutes.
    • Remove the bay leaf from the soup and ladle it into oven-safe bowls.
  4. Add the Toppings and Broil:
    • Top each bowl of soup with a slice of dry French bread.
    • Combine the Gruyere, Emmental, and Parmesan cheeses, then sprinkle generously over the bread.
    • Place the bowls under the broiler for 2-3 minutes, or until the cheese is melted and bubbly.

Conclusion:

This Slow Cooker French Onion Soup is an easy way to enjoy a rich, flavorful classic without much effort. The slow-cooked onions and broth create a deep and comforting flavor, while the cheesy bread topping adds a deliciously gooey and crispy finish. Serve it with extra bread for dipping, and enjoy a bowl of this cozy French favorite!


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