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4 from 3 votes

Easy Slow Cooker French Onion Soup

Easy Slow Cooker French Onion Soup perfect for chilly nights and full of flavor!
Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Yield 16 cups
Author Lisa Huff


Toppings (optional):

  • crusty day old bread or croutons
  • Swiss cheese


  • Place sliced onions into a large slow cooker. Top with beef broth, wine, worcestershire, butter, garlic, and rosemary.
  • Cook on low 6-8 hours or until onions or soft.
  • If desired, spoon into oven safe bowls and top with bread/croutons and Swiss cheese. Place in warm oven to melt cheese.


SNAPPY TIPS: Be sure you slice your onions thinly so that they cook evenly. The recipes makes a lot but you can easily cut the recipe in half or make a big batch and freeze in small containers.
SNAPPY SUBSTITUTIONS: Instead of wine, you can substitute your favorite beer or omit for an alcohol free version. For a healthier version use low fat cheese or omit the cheese and bread.
Course: Soup
Cuisine: American
Keywords: easy french onion soup, slow cooker soup
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