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French Onion Soup - National Homemade Soup Day

If you're anything like me and love a great bowl of soup, but don't always have time to make a complex recipe then this recipe is for you. French onion soup can be so simple and easy, which is why it's one of my favorite quick recipes.

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Slow Cooker French Onion Soup

What you'll need....

  • 3 cups sliced onions (3 medium)

  • 3 Tablespoons margarine or butter, melted

  • 3 Tablespoons All-purpose flour

  • 1 Tablespoon Worcestershire Sauce

  • 1 teaspoon sugar

  • 1/4 teaspoon pepper

  • 4 cans (14 1/2 oz each) ready-to-serve beef broth

  • 8 slices French bread, 1-inch thick

  • 3/4 cup shredded mozzarella cheese (3 ounces)

  • 2 Tablespoons grated or shredded Parmesan cheese


  • Mix onions and margarine inside slow cooker

  • Cover and cook on high heat setting 30-35 minutes or until onions begin to slightly brown around edges

  • Mix flour, Worcestershire sauce, sugar and pepper. Stir flour mixture and broth into onions. Cover and cook on low heat setting 7 to 9 hours (or high heat setting 3 to 4 hours) or until onions are very tender

  • Ladle soup into oven safe bowls, place 1 slice of bread on top of each bowl of soup and top with cheese before placing each bowl in the oven with the broiler on high.

  • Leave in the oven until cheese is melted and browned.

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