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Irresistible Slow Cooker French Onion Soup

A comforting bowl of rich broth, caramelized onions, and melted cheese, perfect for warming your soul.
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Prep Time 15 minutes
Cook Time 6 hours
Total Time 6 hours 15 minutes
Servings: 6 servings
Course: Appetizer, Main Dish
Cuisine: French
Calories: 350
Ingredients Method Notes

Ingredients
  

For the soup
  • 4 large large yellow onions, sliced thin
  • 4 cloves garlic, minced
  • 6 cups vegetable or beef broth Make sure it's halal
  • 2 tablespoons olive oil
  • 1 tablespoon sugar To speed up caramelization
  • 1 tablespoon fresh thyme Or 1 teaspoon dried thyme
  • Salt and black pepper To taste
For serving
  • 1 loaf French bread, sliced
  • 2 cups shredded cheese Gruyère or mozzarella works well

Method
 

Preparation
  1. Begin by slicing the onions. The key to a great French onion soup is in the caramelization of the onions.
  2. In a large skillet, heat the olive oil over medium heat. Add the sliced onions and cook, stirring frequently for about 15-20 minutes until they turn golden brown.
  3. Once the onions are nicely caramelized, add the minced garlic and sugar to the skillet. Stir and cook for another 2-3 minutes until the garlic is fragrant.
  4. Transfer the onion mixture into your slow cooker. Add the broth, thyme, salt, and pepper.
Cooking
  1. Cover and cook on low for 6-8 hours or on high for 3-4 hours, until bubbly and flavorful.
  2. While it cooks, toast the slices of French bread until crisp.
Serving
  1. When the soup is ready, ladle it into bowls, top generously with shredded cheese, and place under the broiler for 2-3 minutes until bubbly. Enjoy!

Notes

If you're out of fresh thyme, you can use dried herbs or even a pinch of Italian seasoning for a unique twist. Don't rush the caramelization process; it's essential for flavor. Store leftovers in the refrigerator for about 3-4 days or freeze without the cheese topping.