Classic French onion soup topped with toasted ciabatta and melted Gruyere cheese.
1,8 kg onions, finely sliced (use sweet brown onions)
125 g butter
125 ml sherry
30 ml chopped thyme (stalks removed)
2 litre good quality chicken stock
5 ml fish sauce
5 ml lemon juice
250 g Gruyere cheese, grated
1 bay leaf
salt and black pepper to taste
6 slices toasted ciabatta bread
1 garlic clove
chopped thyme for serving
Melt the butter in a large saucepan and add the onions. Cook on medium heat for about 10 minutes, then reduce the heat and cook for about an hour – onions must be completely caramelised. Add a bit of water if needed – to prevent onions from burning.
Add the sherry and cook for a few minutes then add the bay leaf, thyme and the chicken stock.
Simmer for about 25 minutes then remove the bay leaf.
Add the fish sauce and the lemon juice, taste and season with salt and pepper
Rub the garlic clove on the toasted ciabatta (both sides of the bread)
Spoon the hot soup into 4 bowls, top with a slice of ciabatta and sprinkle over a generous portion of grated cheese. Spoon over another ladle of the soup and top with more cheddar cheese
Place under the grill until the cheese is bubbling. Remove from oven and garnish with chopped thyme. Serve immediately
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