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Crockpot French Onion Soup

  • Author: Christina
  • Prep Time: 15 minutes
  • Cook Time: 8 hours (low) or 4 hours (high)
  • Total Time: 49 minute
  • Yield: Serves approximately 6 people. 1x
  • Category: Soup
  • Method: Slow Cooking
  • Cuisine: French

Description

Savor the warm, comforting flavors of this Crockpot French Onion Soup, featuring caramelized onions and melted cheese—perfect for cozy evenings with family or friends.


Ingredients

Scale
  • 45 medium yellow onions, thinly sliced
  • 6 cups low-sodium vegetable broth
  • 1 tablespoon olive oil
  • 1 teaspoon fresh thyme (or 1/2 teaspoon dried thyme)
  • Salt and pepper to taste
  • Baguette or crusty bread, sliced and toasted
  • 1 cup Gruyère cheese, shredded

Instructions

  1. Thinly slice the yellow onions using a sharp knife. Place them in the crockpot.
  2. Pour the vegetable broth over the sliced onions.
  3. Drizzle olive oil over the onions and broth. Add thyme, salt, and pepper. Stir gently to combine.
  4. Cover the crockpot and cook on low for 8 hours or high for 4 hours until the onions are caramelized and tender.
  5. About 30 minutes before serving, toast the baguette slices until crispy. Top each slice with Gruyère cheese and place under the broiler until bubbly.
  6. Ladle soup into bowls, float cheesy toast on top, and enjoy!


Nutrition

  • Serving Size: 1 cup (240g)
  • Calories: 225
  • Sugar: 6g
  • Sodium: 750mg
  • Fat: 10g
  • Saturated Fat: 5g
  • Unsaturated Fat: 5g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 2g
  • Protein: 7g
  • Cholesterol: 20mg

Keywords: For a richer flavor, consider adding a splash of balsamic vinegar along with seasonings. If you prefer a vegetarian option, vegetable broth is an excellent substitute.