Slow Cooker French Onion Soup

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4.8 from 4 reviews

Economical and comforting, this tasty soup is the perfect end to a chilly winter day!




  1. Melt butter in sauté pan over medium heat.
  2. Add onions, and sprinkle with salt and pepper. sauté until caramelized and tender (about 15-20 minutes).
  3. Add garlic and cook 3 minutes more.
  4. Pour onion from pan into slow cooker.
  5. Add wine to sauté pan to deglaze the pan. Be sure to loosen all the delicious crusty bits from the pan bottom. Pour this into slow cooker.
  6. Tie the bay leaves and fresh thyme sprigs in a bundle with string (makes it easier to retrieve at the end of cooking time) and place the herb bundle in the slow cooker.
  7. Pour in 8 cups of beef broth.
  8. Cook on High for 5-6 hours or Low for 8 hours.
  9. Remove herb bundle.
  10. Serving preparation:
  11. Slice baguette and place on cookie sheet. Sprinkle cheese liberally on each slice
  12. and toast in broiler for 5 minutes or until bread is toasty and cheese is melted.
  13. Ladle soup into individual bowls and float a cheesy baguette slice on each