Description
This slow cooker french onion soup delivers the classic comfort of caramelized onions, rich beef broth and melted cheese in a hands‑free preparation. Layer sweet onions, broth, thyme and bay leaf in the slow cooker, then let it simmer for hours. Finish under the broiler with toasted bread and shredded cheese for a golden, bubbly topping. Perfect for chilly evenings, this easy recipe serves six and offers deep flavor with minimal effort. Pair with a salad and chilled grape juice for balance ok.
Ingredients
Scale
- 4 large onions, thinly sliced
- 4 cups beef broth
- 1 tablespoon vegetable oil
- 1 teaspoon salt
- 1 teaspoon sugar
- 1 teaspoon thyme
- 1 bay leaf
- 8 slices toasted bread
- 2 cups shredded cheese (such as Gruyère or mozzarella)
Instructions
- Caramelize the onions in a skillet with vegetable oil and sugar until deep amber.
- Transfer the caramelized onions to the slow cooker, add beef broth, salt, thyme, and bay leaf; stir to combine.
- Cover and cook on low for 6‑8 hours or on high for 3‑4 hours.
- Remove the bay leaf, ladle the soup into oven‑safe bowls, top each with a slice of toasted bread and shredded cheese.
- Place the bowls under a hot broiler for 3‑5 minutes until the cheese bubbles and turns golden, then serve immediately.
Notes
- Serve immediately after broiling. Adjust salt to taste. For a richer soup
- add a splash of cream before serving.
- Prep Time: 20 minutes
- Cook Time: 8 hours
- Category: Soups
- Method: Slow Cooker
- Cuisine: French
Nutrition
- Serving Size: 6 servings
- Calories: 350
- Sugar: 1 tsp
- Sodium: 800 mg
- Fat: 12 g
- Saturated Fat: 5 g
- Unsaturated Fat: 7 g
- Trans Fat: 0 g
- Carbohydrates: 30 g
- Fiber: 4 g
- Protein: 15 g
- Cholesterol: 20 mg
Keywords: slow cooker french onion soup, easy soup recipe, slow cooker meals, French onion soup copycat, comfort food recipes, beef broth soup, one pot soups, quick dinner ideas, hearty soup recipes