3-Ingredient French Onion Soup

The slow cooker simmers this soup all day to a savory perfection. To complete the meal, top with a baguette slice and melted Gruyere right before serving.

Serves: 6Hands-on: 5 minutesTotal: 8 hours 5 minutesDifficulty: Easy

Serves: 6


  • 2 large sweet onions, peeled and sliced
  • 6 cups beef broth
  • ¼ tsp. salt
  • ¼ tsp. ground black pepper
  • ¼ cup chopped parsley


  • Place onion and broth in a 4-6 quart slow cooker. Cover and cook on low for 8 hours. Add salt and pepper.
  • Just before serving, ladle soup in bowls and garnish with parsley.