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Slow Cooker French Onion Soup

Slow Cooker French Onion Soup is a comforting classic that transforms simple ingredients into a rich and savory delight. With caramelized onions, hearty beef broth, and a heavenly layer of melted Gruyère cheese atop crusty bread, this dish evokes memories of cozy gatherings and chilly evenings. Let your slow cooker work its magic as you savor the enticing aroma wafting through your home. Perfect for meal prep or special occasions, this soup is sure to impress family and friends alike.

Ingredients

Scale
  • 5 medium yellow onions, thinly sliced
  • 4 cups quality beef broth
  • 6 sprigs fresh thyme
  • 2 bay leaves
  • 1 baguette or crusty bread, sliced
  • 1 cup grated Gruyère cheese
  • 1 tsp sugar
  • Salt and pepper to taste

Instructions

  1. In a skillet over medium heat, melt butter and add sliced onions. Cook until golden brown (20-30 minutes).
  2. Transfer caramelized onions into the slow cooker. Add beef broth, thyme, bay leaves, salt, and pepper.
  3. Cover and cook on low for 6-8 hours.
  4. About 30 minutes before serving, toast baguette slices until golden brown; top with Gruyère cheese.
  5. Broil until cheese is bubbly (3-5 minutes).
  6. Serve soup hot topped with cheesy baguette slices.

Nutrition

Keywords: For a vegetarian version, substitute vegetable broth and use vegetarian-friendly cheese. Feel free to experiment with different cheeses like cheddar or fontina for added flavor.