Slow Cooker French Onion Soup

Slow Cooker French Onion Soup

from damndelicious.net
620 min
8 servings

Slow Cooker French Onion Soup - Yes, you can make French onion soup in the crockpot! Ridiculously easy with basically no stirring and no work!

Ingredients

  • 3 pounds sweet onions, thinly sliced
  • 3 tablespoons unsalted butter, melted
  • 2 teaspoons brown sugar
  • Kosher salt and freshly ground black pepper, to taste
  • 6 sprigs fresh thyme
  • 1 bay leaf
  • 6 cups beef stock
  • 2 teaspoons sherry vinegar
  • 1 (12-ounce) French baguette, sliced
  • 1 cup shredded Gruyère cheese
  • 1 cup shredded asiago cheese

Directions

  1. 1

    Place onions into a 6-qt slow cooker.

  2. 2

    Stir in butter, brown sugar and 1 teaspoon salt; top with thyme and bay leaf. Cover and cook on high heat for 8-10 hours, or until onions are caramelized and browned.*

  3. 3

    Stir in beef stock and sherry; season with salt and pepper, to taste. Cover and cook on high heat for 2-3 hours, or until heated through. Remove and discard thyme and bay leaf.

  4. 4

    Preheat oven to broil.

  5. 5

    Place baguette slices onto a baking sheet. Place into oven and broil until golden brown on both sides, about 1-2 minutes per side; set aside.

  6. 6

    Divide soup into ramekins or ovenproof bowls. Place onto a baking sheet. Top with baguette slices to cover the surface of the soup completely; sprinkle with cheeses. Place into oven and broil until golden brown and cheeses have melted; about 2 minutes.

  7. 7

    Serve immediately.