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Slow Cooker French Onion Soup

The slow cooker tackles the most time-consuming element to French onion soup—caramelizing the onions until they are super tender and sweet.

Serves 6
Ready in 495 mins
Prep time 15 mins
Cooking time 480 mins
271 calories per serving


> 3 tbsp butter, cubed
> 3 lbs yellow onions, thinly sliced
> 1 (32 oz) container low-sodium beef broth
> 1 cup water
> 2 bay leaves
> 2 tsp fresh thyme leaves
> 1 clove garlic, thinly sliced
> 12 slices whole wheat French bread
> 3/4 cup shredded reduced-fat Swiss cheese


Add the butter and onions to a 6- to 7-qt slow cooker bowl. Season with salt. Cover and cook on low 4 hours, until onions are caramelized.
To slow cooker bowl, add the broth, water, bay leaves, thyme, and garlic. Cook on high 4 hours.
Ten minutes before serving, preheat broiler. Place the bread slices on a foil-lined baking sheet. Divide the cheese among bread slices. Broil 2–3 min., until cheese is melted and bread is toasted.
Discard bay leaves from soup. Season with salt and pepper to taste. Serve the soup with cheese toasts.

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