French Onion Soup

Slow Cooker Recipe

Cooking Times

Ready in: 8+ hours
Prep time: 15 minutes
Cook time: 8 - 10 hours
Serves: 4 - 6


  • 6 large Cal-Organic Yellow Onions
  • 3 tbsp. extra-virgin olive oil
  • 14 oz. chicken stock
  • 10 oz. beef stock
  • 2 tbsp. Marsala wine
  • 6 slices French bread
  • 8 oz. Gruyѐre cheese, sliced


  1. Peel and thinly slice onions by hand or in a food processor. Put in slow cooker and toss with olive oil.
  2. Cover and cook on low for 8 to 10 hours, stir, when possible, until onions are caramelized.
  3. Add stock and wine. Cover and cook on high until hot, about 20 minutes.
  4. While soup is cooking, preheat oven to 400 degrees Fahrenheit. Brush bread slices with olive oil and place on baking sheet. Bake until golden, about 10 minutes. Set aside.
  5. Ladle soup into ovenproof bowls, placed on a baking sheet. Top each bowl with a toasted bread slice and a slice of cheese.
  6. Place soup bowls about 4-inches below broiler in over. Broil until cheese is melted, about 2 minutes. Serve hot.

Recipe and image from our e-book Hearty Slow Cooker Recipes

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Back To Our Roots

12 sweet, savory, and fresh recipes using our favorite Cal-Organic root vegetables.