Croque Madame
A croque monsieur (ham and cheese on bread, blanketed in béchamel and broiled) becomes a croque madame when you put a fried egg on top. The egg yolk breaks over the crispy, cheesy surface and turns an already indulgent sandwich into something almost absurdly rich. This is lunch, not a lifestyle choice.
Instructions
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Make the béchamel: Melt 2 tablespoons butter in a small saucepan over medium heat. Whisk in the flour and cook for 1 minute. Gradually whisk in the milk. Cook, stirring, until thick enough to coat a spoon, about 3 minutes. Stir in nutmeg, Dijon, salt, and pepper. Remove from heat.
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Preheat your broiler. Lay the bread slices on a baking sheet. Spread a thin layer of béchamel on each slice. On two slices, layer ham and half the Gruyère. Top with the remaining bread, béchamel-side down.
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Spread more béchamel over the tops of the sandwiches and sprinkle with the remaining Gruyère.
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Broil for 3 to 4 minutes until the cheese is bubbling and golden brown. Watch carefully — it goes from perfect to burnt in seconds.
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While the sandwiches broil, fry the eggs in butter over medium heat until the whites are set and the edges are crispy, about 2 minutes.
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Place a fried egg on top of each sandwich. Serve immediately. Knife and fork required.