Ingredients

  • 5 tablespoons unsalted butter, softened
  • 1 tablespoon all-purpose flour
  • 2/3 cup whole milk
  • Coarse salt and freshly ground pepper
  • 8 slices white Pullman bread or thinly sliced sandwich bread
  • 2 tablespoons Dijon mustard
  • 5 ounces smoked salmon
  • 1/4 cup small dill sprigs, plus more for garnish
  • 2 cups grated Comte cheese
  • 4 large eggs

Method

  • Make the bechamel sauce: Melt 1 tablespoon butter in a wide medium saucepan over medium-high heat.
  • Whisk in flour; cook, whisking, 30 seconds.
  • Gradually whisk in milk; cook, whisking, until mixture comes to a boil and has thickened, about 2 minutes.
  • Remove from heat.
  • Season with salt and pepper.
  • Using remaining 4 tablespoons butter, butter 1 side of each piece of bread.
  • Set aside 4 slices.
  • Spread unbuttered sides of remaining 4 slices with mustard; top with salmon.
  • Scatter dill over salmon.
  • Top each with 1/4 cup cheese.
  • Sandwich with remaining bread, buttered side up.
  • Preheat broiler.
  • Heat a large nonstick skillet over medium-low heat.
  • Add sandwiches; cook, turning once, until golden brown, about 2 minutes per side.
  • Spread 2 tablespoons reserved bechamel sauce on top of each sandwich; sprinkle each with 1/4 cup remaining cheese.
  • Broil until cheese is bubbling and golden brown.
  • Meanwhile, heat a large nonstick skillet over medium heat.
  • Crack eggs into skillet.
  • Cover, and cook until whites are set but yolks are still soft, about 2 minutes.
  • Season with salt and pepper.
  • Place 1 egg on top of each sandwich, and serve.