Slow Cooker French Onion Soup Recipe
Slow Cooker French Onion Soup Recipe photo by Taste of Home

Slow Cooker French Onion Soup Recipe

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It's hard to believe something this delightful came from a slow cooker! Topped with a slice of French bread and provolone cheese, individual servings of this French onion soup are sure to be enjoyed by everyone at your dinner table. —Kris Ritter, Pittsburgh, Pennsylvania
TOTAL TIME: Prep: 15 min. Cook: 8 hours
MAKES:4 servings
TOTAL TIME: Prep: 15 min. Cook: 8 hours
MAKES: 4 servings


  • 2 large sweet onions, thinly sliced (about 4 cups)
  • 1/4 cup butter, cubed
  • 2 cans (14-1/2 ounces each) beef broth
  • 2 tablespoons sherry or additional beef broth
  • 1/2 teaspoon pepper
  • 4 slices French bread (1/2 inch thick), toasted
  • 4 slices provolone cheese

Nutritional Facts

1 cup: 267 calories, 20g fat (12g saturated fat), 50mg cholesterol, 1324mg sodium, 10g carbohydrate (2g sugars, 1g fiber), 11g protein


  1. Place onions and butter in a 1-1/2-qt. slow cooker coated with cooking spray. Cover and cook on low for 6 hours or until onions are tender. Stir in the broth, sherry and pepper. Cover and cook 2-3 hours longer or until heated through.
  2. Ladle soup into ovenproof bowls. Top each with a slice of toast and cheese. Broil 4-6 in. from the heat for 2-3 minutes or until cheese is melted. Serve immediately. Yield: 4 servings.
Originally published as French Onion Soup in Taste of Home Everyday Slow Cooker & One Dish Recipes Annual 2008, p8

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Reviewed Nov. 24, 2015

"This soup is absolutely wonderful. I only had 1 sweet onion so I added a red onion. That is the only change. My husband will ask for this often!"

Reviewed Nov. 23, 2014

"I just made this tonight. My first time making French Onion soup. It was easy and really really delicious. I used a box of Trader Joe's beef broth instead of canned. I added a bay leaf, and 1 tsp of beef granules. Everything else was exactly the same. (I did cook the onions on the stove to save time, and then put them in the crockpot with the broth. I will definitely make again. Hubby loved it too."

Reviewed Mar. 23, 2014

"I smashed this recipe together with another one to make a great French onion soup. Caramelized the onions in a pan first. Added 1 can of progresso French onion soup, 1 can Campbells consommé, 1 teaspoon of better than bouillon beef flavor, lawrys, parsley, garlic, salt, bay leaf. Those extra ingredients only take a minute to add and gives it a depth of flavor it needs. I triple the recipe, we love it."

Reviewed Feb. 22, 2014

"I have made this several times and it's great! My boyfriend says it's the best he has ever had. It's our favorite soup!"

Reviewed Nov. 16, 2013

"Made this recipe and once I tasted it I wished I didn't have to share..."

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