Slow Cooker French Onion Soup

This delicious soup can be made in a slow cooker and is packed with flavor!

Serves: 6

Slow Cooker French Onion Soup

Love that this soup cooks all day in a slow cooker! It does take some prep work, but the taste is well worth it!

45 minPrep Time

6 hrCook Time

6 hr, 45 Total Time

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  • 3/4 cup butter
  • 4 yellow onions, sliced thinly into rings
  • 1 tablespoon white sugar
  • 2 cloves of garlic, minced
  • 1/2 cup apple cider
  • 7 cups beef broth
  • 1/4 teaspoon thyme
  • French bread, sliced into 1" slices
  • 1/2 cup provolone cheese
  • 1/2 cup swiss cheese
  • 1/2 cup mozzarella cheese


  1. In a large skillet on medium-high heat, melt butter. Add in onions and cook until see-through, stirring frequently (It takes about 10 minutes).
  2. Add in sugar, and reduce heat to medium. Stir the onions constantly, caramelizing them. It will take about 20-30 minutes.
  3. Add in the minced garlic and apple cider, and stir until warmed through.
  4. Transfer the onions to the slow cooker and add in beef broth and thyme. Cook on low for 6-8 hours.
  5. Before serving, place the french bread slices on a baking sheet and broil in the oven for 1-2 minutes (just until browned).
  6. In a small bowl, mix together the three cheeses.
  7. Pour soup in oven-safe bowls (the soup will serve 6-8), place a piece of french bread in each bowl, and then top each with a portion of cheese. Place each bowl on the cookie sheet, and broil for 2 more minutes, until the cheese starts to melt and brown.
  8. Serve hot.

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6 Responses to “Slow Cooker French Onion Soup”

  1. Carole Sander
    Do you ever list the nutrition information on your recipes? They always sound so good but I am cooking for a child with diabetes and don't know what the carbs count. Does the bundle of e books that you are selling now have the carbs listed? Would love to get them

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