Croque Madame

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  • Level: Easy
  • Total: 50 min
  • Active: 50 min
  • Yield: 6 servings
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Ingredients

Bechamel Sauce:

2 tablespoons unsalted butter

2 tablespoons minced onion

1/4 cup all-purpose flour 

2 cups whole milk 

Kosher Salt  

Freshly ground white pepper 

Pinch of nutmeg, optional 

Sandwich:

2 tablespoons Dijon mustard

12 slices thick-cut white bread 

6 to 9 ounces sliced Gruyere (12 thin slices) 

1 1/2 pounds thinly sliced ham 

4 ounces (1 stick) unsalted butter 

6 large eggs 

Directions

  1. For the bechamel sauce: Melt the butter in a small pot. Add the onion and cook over low heat to sweat them. Stir in the flour and cook for 1 to 2 minutes. Slowly stir in the milk and bring to a simmer. Cook until smooth and thickened, 10 to 15 minutes, and then season with salt, pepper and nutmeg, if using.
  2. For the sandwich: Heat the oven to high broil.
  3. Build each sandwich as follows: Spread 1 teaspoon of Dijon mustard on a piece of bread; top with 1 slice of Gruyere, 4 ounces ham, another slice of Gruyere and then a piece of bread. Melt half the butter in a large skillet. Add the sandwiches and toast to a golden brown. Flip and brown on the second side. Remove the sandwiches from the pan and place on a rimmed baking sheet.
  4. Spoon 1/3 cup of the bechamel sauce over the top of each sandwich. Broil the sandwiches to brulee the bechamel.
  5. Meanwhile, melt the remaining 4 tablespoons butter in the skillet and cook the eggs over-easy. Remove the sandwiches from the broiler and top with the over-easy eggs.