Croque Monsieur

Serves 1

A well-made Croque Monsieur is warm, it’s toasty, it’s crunchy, it’s oozing with fat. It’s the ultimate French toastie – and this one’s a knockout. It makes a great supper, with a green salad on the side. I have used prosciutto instead of cooked ham in this recipe, as I prefer the flavour.

Marcus Everyday


Serves 1

For the Bechamel

  • 100ml milk
  • 1 tsp thyme leaves
  • 10g butter
  • 1 tbsp plain flour
  • ½ tsp Dijon mustard
  • 1 tsp wholegrain mustard
  • 50g Cheddar cheese, grated
  • sea salt and freshly ground black pepper

For the Croque Monsieur

  • 50g Gruyère cheese, grated
  • 2 slices of sourdough
  • 3-4 slices of prosciutto
  • 10g butter


For the Bechamel

Put the milk and thyme into a small saucepan. Gently bring to a simmer over low heat. Melt the butter in another small saucepan then add the flour, and a pinch each of salt and pepper. Cook over low heat for about 1 minute to get rid of the floury taste, but avoid letting it brown.

Gradually whisk in half of the hot milk and stir quickly to combine. Add the remaining milk and cook for a further five minutes over low heat, stirring continuously.

Remove from the heat, add the mustards and cheese and stir until the cheese has melted.

To assemble

Preheat the oven to 200°C/180°C fan/gas 6.

Place the grated Gruyère on one slice of the sourdough then top with the prosciutto. Finish with the béchamel then top with the other slice of sourdough. Heat a frying pan over medium heat. When hot, add the butter then carefully add the sandwich and toast it for 3-5 minutes. Gently turn the sandwich over and brown the other side for another 3-5 minutes.

4. Transfer to a piece of baking parchment on a baking tray and bake in the oven for 4-5 minutes, until the cheese has melted.


Find more recipes for one in Marcus Everyday by Marcus Wareing.