Slow Cooker French Onion Soup

Slow Cooker French Onion Soup

  • Prep: 20 min
  • Cook Time: 4 hr
  • Total: 4 hr 20 min
  • Serving: 6-8 servings

A delicious slow cooker onion broth with a cheesy French bread top.


  • 5-6 sweet onion, thinly sliced
  • 1 clove garlic, minced
  • 2 tablespoons butter
  • 2 (14 ounce) cans beef broth
  • 2 teaspoons Worcestershire sauce
  • 6-8 (1-inch) slices French bread
  • 6-8 slices Swiss cheese


  1. Cook the onions and garlic in the butter in a skillet over low heat for 20 minutes, stirring often. Do NOT brown.
  2. Combine the onions, garlic, beef broth, Worcestershire sauce and 1 cup of water in a greased slow cooker. Cook covered on low for 5-8 hours, or on high for 2-1/2 to 4 hours.
  3. When ready to serve, toast the bread. Add a slice of cheese to the top of each and broil for 3-4 minutes, or until the cheese is bubbly.
  4. Pour the soup into bowls and serve with the bread slices over top.


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