French onion soup with croque monsieur croûtons

Preparation time
less than 30 mins

Cooking time
30 mins to 1 hour

Serves
Serves 4

By Matt Tebbutt
From Saturday Kitchen

Ingredients

For the French onion soup

  • 30g/1oz butter
  • 4 large white onions, finely sliced
  • 100g/3½oz smoked pancetta lardons, diced
  • 1 tsp chopped fresh thyme
  • 2 garlic cloves, crushed
  • 1 bay leaf
  • 1 tbsp yeast extract, such as Marmite
  • 30g/1oz flour
  • 1 litre/1¾ pint beef stock
  • salt and freshly ground black pepper

For the Gruyère croûtons

  • 10g butter
  • 10g flour
  • 1½ tbsp milk
  • 2 tbsp double cream
  • 200g/7oz Gruyère cheese, half grated and half sliced
  • pinch cayenne pepper
  • ½ thin French stick, cut into thin slices
  • 2 tbsp Dijon mustard
  • 2 tbsp mayonnaise
  • 2 slices good quality, thin cut ham, cut into small pieces
  • salt
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