Slow Cooker French Onion Soup
Slow Cooker French Onion Soup is the ultimate comfort dish for chilly evenings. This rich and savory soup features sweet, caramelized onions simmered in a flavorful beef broth, topped with gooey melted Gruyère cheese and crunchy baguette slices. Perfect for cozy gatherings or a solo night in, each spoonful delivers warmth and nostalgia, transporting you to a charming bistro with every bite.
- Prep Time: 15 minutes
- Cook Time: 6 hours
- Total Time: 6 hours 15 minutes
- Yield: Serves 6
- Category: Main
- Method: Slow Cooking
- Cuisine: French
Ingredients
Scale
- 4 large sweet onions, thinly sliced
- 4 tablespoons unsalted butter
- 6 cups beef broth
- 1 cup dry white wine
- 2 teaspoons fresh thyme
- Salt and pepper to taste
- 4 baguette slices, toasted
- 1 cup shredded Gruyère cheese
Instructions
- Peel and thinly slice the sweet onions.
- In a skillet over medium heat, melt the butter and sauté the onions until golden brown (about 30 minutes).
- Transfer the caramelized onions to the slow cooker; add beef broth, white wine, and thyme. Stir gently.
- Season with salt and pepper to taste.
- Cover and cook on low for 6 hours or until fragrant.
- Serve soup in bowls topped with toasted baguette slices and melted Gruyère cheese under the broiler until bubbly.
Nutrition
- Serving Size: 1 serving
- Calories: 320
- Sugar: 8g
- Sodium: 960mg
- Fat: 18g
- Saturated Fat: 11g
- Unsaturated Fat: 7g
- Trans Fat: 0g
- Carbohydrates: 30g
- Fiber: 2g
- Protein: 10g
- Cholesterol: 40mg
Keywords: - For added flavor, consider adding a splash of sherry or swapping in sautéed mushrooms. - Store leftovers in an airtight container in the fridge for up to three days; reheat gently before serving.