Slow-Cooker French Onion Soup
+4 photos

Slow-Cooker French Onion Soup

6 servings
French onion soup is even tastier (and easier than ever!) when prepared in the slow cooker. This recipe for slow-cooker French onion soup also feeds six, making it a great option if you're looking for a classic soup starter.

Ingredients

  • Vidalia onions
    2 lb
  • unsalted butter
    25 c
  • granulated sugar
    1 ½ tsp
  • kosher salt
    1 ½ tsp
  • black pepper

    plus more for garnish

    5 tsp
  • thyme sprigs

    tied with kitchen twine

    6
  • bay leaf
    1
  • lower-sodium beef broth
    5 c
  • sherry vinegar
    1 tbsp
  • baguette slices

    ½-inch-thick

    12
  • Gruyère cheese
    6 oz
  • Fresh thyme leaves

Directions

  1. 1

    Stir together onions, melted butter, sugar, salt, and pepper in a 6-quart slow cooker until onions are fully coated. Place thyme and bay leaf on onion mixture. Cover and cook on HIGH, stirring once halfway through, until onions are deep golden brown and caramelized, 6 to 7 hours.

    Step 1
  2. 2

    Remove and discard thyme and bay leaf. Stir in broth and vinegar. Cover and cook on HIGH until thoroughly heated, about 30 minutes.

    Step 2
  3. 3

    Preheat oven to broil, with oven rack about 6 inches from heat. Spoon soup into 6 ovenproof ramekins; place on a large rimmed baking sheet. Top each ramekin with 2 baguette slices; divide cheese evenly among ramekins (about 1/4 cup each).

    Step 3
  4. 4

    Broil until cheese is melted and golden brown, about 3 minutes. Sprinkle with fresh thyme leaves and black pepper. Serve immediately.

    Step 4
Slow-Cooker French Onion Soup
+4

Slow-Cooker French Onion Soup

410 min6 servings

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