Slow Cooker French Onion Soup for Cold Winter Days
This slow cooker French onion soup is ridiculously easy and features a rich beef broth base with perfectly caramelized onions topped with a four-cheese blend.
- Prep Time: 30 mins
- Cook Time: 4 hrs 45 mins
- Total Time: 5 hrs 15 mins
- Yield: 8 servings 1x
- Category: Soup
- Method: Slow Cooker
- Cuisine: French
Ingredients
6 tablespoons butter
4 large yellow onions, sliced and separated into rings
1 tablespoon white sugar
2 cloves garlic, minced
1/2 cup cooking sherry
7 cups reduced-sodium beef broth
1 teaspoon sea salt, or to taste
1/4 teaspoon dried thyme
1 bay leaf
8 slices of French bread
1/2 cup shredded Gruyere cheese
1/3 cup shredded Emmental cheese
1/4 cup freshly shredded Parmesan cheese
2 tablespoons shredded mozzarella cheese
Instructions
1. Heat butter in a large pot; add onions and stir until translucent (10 mins).
2. Sprinkle with sugar; cook on medium heat until caramelized (30 mins). Stir in garlic (1 min).
3. Deglaze pot with sherry, scraping the bottom bits.
4. Transfer onions to slow cooker. Add beef broth, salt, thyme, and bay leaf.
5. Cover and cook on Low for 8-10 hours or High for 4-6 hours.
6. Preheat broiler. Toast French bread slices on a baking sheet for 1-2 mins per side.
7. Mix Gruyere, Emmental, Parmesan, and mozzarella in a bowl.
8. Fill oven-safe crocks 3/4 full, float a bread slice on top, and add 2 tbsp cheese mixture.
9. Broil until cheese is browned and bubbling (about 2 minutes).
Notes
Caramelizing the onions on the stove first is essential for deep flavor.
Use oven-safe crocks for the broiler step.
Substitute dry red wine if you do not have cooking sherry.
Nutrition
- Serving Size: 1 bowl
- Calories: 442
- Sugar: 12g
- Sodium: 1150mg
- Fat: 16g
- Saturated Fat: 10g
- Unsaturated Fat: 4g
- Trans Fat: 0g
- Carbohydrates: 57g
- Fiber: 4g
- Protein: 18g
- Cholesterol: 45mg
Find it online: https://www.flavourrecipe.com/slow-cooker-french-onion-soup/