Description
Slow Cooker French Onion Soup delivers a deep, caramelized onion flavor in a rich beef broth, topped with toasted baguette and melted Gruyère. This easy, hands‑off recipe uses a slow cooker to achieve perfectly softened onions and a hearty aromatic broth in just a few hours. Ideal for busy weeknights, the soup serves six and offers comforting warmth, making it a go‑to classic for cozy meals and effortless entertaining. Serve hot with a crisp green salad for a balanced, satisfying meal. Enjoy!Now
Ingredients
Scale
- 4 large onions, thinly sliced
- 4 tablespoons butter
- 4 cups beef broth
- 1 teaspoon thyme
- 1 bay leaf
- 1 loaf baguette, sliced
- 2 cups shredded Gruyère cheese
- Salt and pepper to taste
Instructions
- Melt butter in a skillet over medium heat, add sliced onions, and cook until deep golden and caramelized, about 25 minutes.
- Transfer caramelized onions to the slow cooker.
- Add thyme, bay leaf, and beef broth; season with salt and pepper; stir to combine.
- Cover and cook on low for 6–8 hours until onions are very soft.
- Preheat broiler; toast baguette slices, top each with shredded Gruyère, and place under broiler until cheese is melted and bubbly.
- Ladle soup into bowls, add a toasted baguette slice, and serve hot.
Notes
- For a richer flavor
- add a splash of grape juice in the last hour. Adjust salt to taste after cooking.
- Prep Time: 15 minutes
- Cook Time: 8 hours
- Category: Soups
- Method: Slow Cooker
- Cuisine: French
Nutrition
- Serving Size: 6 servings
- Calories: 350
- Sugar: 5 g
- Sodium: 800 mg
- Fat: 10 g
- Saturated Fat: 4 g
- Unsaturated Fat: 6 g
- Trans Fat: 0 g
- Carbohydrates: 30 g
- Fiber: 2 g
- Protein: 12 g
- Cholesterol: 15 mg
Keywords: Slow Cooker French Onion Soup, easy French onion soup, slow cooker soup recipes, best onion soup, comfort food soup, how to make onion soup, slow cooker meals, hearty soup recipes, French cuisine soup, soup for winter, classic onion soup