French recipe

Croque Monsieur

Crisp white bread encloses folded ham and Gruyère, finished with a thick béchamel and a bubbling cheese top.

France

Prep
15 min
Cook
25 min
Total
40 min
Servings
2
Golden ham sandwich topped with melted cheese and white sauce
Real finished-dish photographPhotograph by Michael BrewerSource page · Original file · CC BY-SA 2.5Cropped, resized, and compressed by Recipe Nest Vault.

01

Ingredients

  • 200 g

    firm white sandwich bread, 4 slices about 1.5 cm thick

  • 160 g

    ready-to-eat cooked ham, thinly sliced

  • 90 g

    Gruyère, grated and divided equally

  • 30 g

    unsalted butter, divided 20 g for sauce and 10 g for bread

  • 20 g

    plain flour

  • 200 ml

    whole milk

  • 10 g

    Dijon mustard

  • 1 g

    fine salt

  • 0.5 g

    black pepper

  • 0.1 g

    ground nutmeg

02

Method

  1. 01

    Make a pale roux

    Melt 20 g butter in a small pan over medium-low heat. Stir in flour and cook 1 minute until smooth and pale, scraping the corners so no flour burns.

    Croque Monsieur, step 1: Make a pale roux.
    Cooking-step illustration, not a photograph
  2. 02

    Whisk in the milk

    Whisk in milk gradually, then simmer gently for 3–4 minutes until thick enough to spread. Stir in salt, pepper and nutmeg and cool 5 minutes; the sauce should hold on a spoon.

    Croque Monsieur, step 2: Whisk in the milk.
    Cooking-step illustration, not a photograph
  3. 03

    Build two sandwiches

    Butter the outside faces of the bread with the remaining 10 g butter. Spread mustard and half the béchamel inside, then add ham and half the cheese. Close to make two even sandwiches.

    Croque Monsieur, step 3: Build two sandwiches.
    Cooking-step illustration, not a photograph
  4. 04

    Toast in a skillet

    Heat an ovenproof skillet over medium-low heat. Cook sandwiches 3–4 minutes per side until crisp and golden, pressing only lightly with a broad spatula. Heat the oven to 190°C meanwhile.

    Croque Monsieur, step 4: Toast in a skillet.
    Cooking-step illustration, not a photograph
  5. 05

    Coat the tops

    Spread the remaining béchamel over the tops to the edges. Divide the remaining cheese evenly over the sauce, keeping it mostly on the bread so it does not scorch in the pan.

    Croque Monsieur, step 5: Coat the tops.
    Cooking-step illustration, not a photograph
  6. 06

    Heat the filling through

    Bake at 190°C for 8–10 minutes until the cheese melts and the filling reaches 74°C. Check through the side of the sandwich so the top coating stays intact.

    Croque Monsieur, step 6: Heat the filling through.
    Cooking-step illustration, not a photograph
  7. 07

    Gratinate and serve

    Switch to a 230°C top grill for 1–2 minutes, watching continuously until brown spots appear. Rest 2 minutes, then lift with a wide spatula and serve while the edges are crisp.

    Croque Monsieur, step 7: Gratinate and serve.
    Cooking-step illustration, not a photograph

03

Sources and photo credit

This standardized method was independently rewritten after cross-checking the references below. Recipe Nest Vault does not claim that the credited photographer cooked from this exact version.

Recipe references

Croque monsieur — Photograph by Michael Brewer; CC BY-SA 2.5.

Step illustrations: Original illustrations created by Recipe Nest Vault with OpenAI image_gen.

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