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Crockpot French onion soup in a stainless steel pot with sliced bread on the side

WW Crockpot French Onion Soup

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  • Author: Susan
  • Total Time: 250 minutes
  • Yield: 6 servings 1x
  • Diet: Low Calorie


Bonjour, fellow food enthusiasts and wellness seekers! Today, I'm delighted to share a recipe that beautifully marries the comforting flavors of classic French cuisine with the smart, health-conscious approach of Weight Watchers.

Brace yourself for a warm, cozy, and utterly delectable experience with our Weight Watchers Crockpot French Onion Soup.


Units Scale
  • 6 Large Vidalia Onions sliced
  • 2 Tablespoons of Butter
  • 2 Teaspoons of Sea Salt
  • 1/4 cup of Fino Sherry
  • 2 Teaspoons of Minced Garlic
  • 3 cups of Low Sodium Chicken Broth
  • 3 cups of Low Sodium Beef Broth
  • 1 Teaspoon of Thyme or 5 Sprigs of Thyme
  • 1 Bay Leaf
  • 1 Teaspoon of Low Sodium Soy Sauce
  • 1/4 Teaspoon of Pepper
  • 3 Tablespoons of Shredded Parmesan Cheese


  1. Peel and slice your onions - Start by cutting off the root end and the top of the onion. Cut the onion in half from top to bottom, so you have two halves. Peel the skin off each half. 

    Lay one of the onion halves flat on the cutting board, and make vertical cuts into the onion, being careful not to cut all the way through the root end. The closer your cuts are, the finer your slices will be. If you prefer thicker slices, make wider cuts. The root end holds the onion together, making it easier to slice.

  2. Place your butter in a large frying pan or wok over medium high heat and let the butter melt then add in your sliced onions. Saute for about 5 minutes stirring continuously then add in minced garlic and soy sauce and cook for an additional 5 minutes. Next add in your Sherry and continue stirring until onions start to get soft and translucent.
  3. Once the onions are caramelized add them to your crockpot along with your broth, sea salt, pepper, thyme, bay leaf and sugar. Cover and cook on high for 3-4 hours.
  4. Once cooking is complete remove the bay leaf and sprig of thyme. Serve with a sprinkle of parmesan cheese. 
  5. If you don't mind a couple of extra WW points add in a slice of toasted bread to your soup and cover with a slice of Muenster cheese. Place your bowl in the air fryer or oven to melt the cheese for an authentic French Onion Soup.


  • Choose the Right Onions: Use sweet onions like Vidalia or Walla Walla for a milder flavor. Yellow onions work well too.
  • Thinly Slice Onions: Make sure to slice the onions uniformly for even caramelization.
  • Low-Calorie Cooking Spray: Instead of using butter, coat the bottom of your crockpot with a calorie-friendly cooking spray.
  • Caramelize Onions Slowly: Cook the onions on the low setting for a long time, at least 6-8 hours, until they're deeply caramelized. This is where most of the flavor comes from.
  • Add Fresh Herbs: Fresh thyme and bay leaves can add aromatic depth to your soup without adding extra points.
  • Low-Sodium Broth: Use a low-sodium beef or vegetable broth to control the salt content. You can always add salt to taste later.
  • Wine and Deglazing: A splash of white wine during the deglazing process can add complexity to your soup. Just be mindful of the points if you're following Weight Watchers.
  • Be Mindful of Cheese: Traditional French Onion soup is topped with lots of cheese, but for a lighter version, use reduced-fat cheese or a smaller amount of a strongly flavored cheese like Gruyère.
  • Whole Wheat Bread: Opt for whole wheat baguette or croutons for a healthier twist. Toast them before adding to the soup to prevent sogginess.
  • Portion Control: Use smaller crocks or bowls to control serving sizes. This helps with portion management for Weight Watchers.
  • Homemade Stock: If possible, make your own stock. It's lower in salt and healthier.
  • Skim Off Fat: After the soup is done, skim off any excess fat from the top to reduce the overall calorie content.
  • Add Vegetables: To increase the nutritional value without adding many points, consider adding sliced mushrooms or diced carrots.
  • Watch the Sugar: Be mindful of the sugar content in the wine and the broth. Choose options with lower sugar if you're on a diet.
  • Slow Simmering: Once you've assembled all the ingredients, let the soup simmer on the low setting for an additional hour or two to meld the flavors.
  • Prep Time: 10 minutes
  • Cook Time: 240 minutes
  • Category: Dinner
  • Method: Crockpot
  • Cuisine: American


  • Serving Size: 1 1/2 cups
  • Calories: 137
  • Sugar: 7.5 g
  • Sodium: 1193.4 mg
  • Fat: 5.5 g
  • Carbohydrates: 16.7 g
  • Protein: 6.2 g
  • Cholesterol: 12 mg