Experience the rich, savory flavors of classic French Onion Soup topped with melted Gruyère cheese. Perfect for cozy dinners, this slow-cooked recipe is a comforting delight.
574 kcal
/serving
4 hrs on high or 8 hrs on low, plus 5-10 mins under grill
Serves
4
Medium
French
Meal Prep Friendly
Ingredients
- {'group': 'Main', 'item': '750g onions, thinly sliced'}
- {'group': 'Main', 'item': 'small handful of thyme, leaves picked'}
- {'group': 'Main', 'item': '1 bay leaf (optional)'}
- {'group': 'Main', 'item': '30g butter, cubed'}
- {'group': 'Main', 'item': '1.2L beef stock'}
- {'group': 'Main', 'item': '200ml dry white wine'}
- {'group': 'Main', 'item': 'splash of olive oil (optional)'}
- {'group': 'Main', 'item': '½ tbsp cornflour, slackened with water (optional)'}
- {'group': 'Topping', 'item': '1 baguette, sliced'}
- {'group': 'Topping', 'item': '150g gruyère or emmental, grated'}
- {'group': 'Seasoning', 'item': 'salt and black pepper'}
Preparation
- Thinly slice the onions and pick the thyme leaves.
- Cube the butter and slacken the cornflour with water if using.
Cooking
- In a slow cooker, combine the onions, thyme, bay leaf, butter, beef stock, white wine, and olive oil.
- Season with salt and black pepper.
- Cover and cook on high for 4 hours or on low for 8 hours until the onions are tender.
- Adjust seasoning as needed.
- If a thicker consistency is desired, stir in the cornflour slurry.
Plating & Serving
- Preheat the grill to high.
- If the slow cooker bowl is oven-safe, place the baguette slices on top of the soup and sprinkle with grated cheese.
- Grill for 5-10 minutes until the cheese is golden and bubbling.
- Alternatively, ladle the soup into heatproof bowls, top with baguette and cheese, and grill until the cheese is melted and bubbly.
Notes
This soup can be frozen. To serve, defrost and reheat, then top with fresh baguette and cheese before grilling.
Suggested Sides
Nutrition per Serving
574
Calories
27.7g
Protein
24% DV
63.1g
Carbs
22% DV
20.6g
Fat
26% DV
5.5g
Fiber
14% DV
13.7g
Sugars
1550mg
Sodium
103% DV
57mg
Cholesterol
16% DV
| Diet Type | Balanced |
| Health Labels | Egg Free Peanut Free Tree Nut Free Soy Free Fish Free Shellfish Free Pork Free Crustacean Free Celery Free Mustard Free Sesame Free Lupine Free Mollusk Free |
* Daily Values based on a 2,000 calorie diet.
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Recipe Details
Allergens
Gluten, Dairy
Equipment
Slow Cooker, Grill
Category
Dinner
Meal Type
Dinner
Tags
onion, French, slow-cook