Ingredients

  • 8 ounces white pepper jack cheese, coarsely grated
  • 1 small poblano pepper, roasted, peeled, seeded, and finely diced
  • 1 small jalapeno, seeded and minced
  • 1/4 cup
  • or good quality store-bought mayonnaise
  • 1 tablespoon chopped fresh cilantro
  • Grated zest and juice of 1/2 lime
  • Kosher salt to taste
  • 1/4 cup creme fraiche or sour cream
  • 2 tablespoons freshly grated Parmesan
  • 1 large egg yolk
  • 1 to 2 drops white truffle oil
  • 1/2 teaspoon sugar
  • Eight 1/2-inch-thick slices brioche or Pullman sandwich white loaf
  • 1/2 cup
  • 2 tablespoons unsalted butter
  • 1/2 cup arugula for serving (optional)

Method

  • In a medium bowl, stir the cheese, poblano, jalapeno, aioli, cilantro, lime zest and juice, and salt together until well combined. In a small bowl, whisk the creme fraiche, Parmesan, egg yolk, truffle oil, and sugar together until well combined.
  • Lay 4 of the bread slices on a work surface and spread one-quarter of the cheese mixture evenly over each slice. Spread 2 tablespoons of the relish on each of the 4 remaining slices of bread, place them on top of the cheese, and press down lightly.
  • Melt the butter in a large skillet over medium-low heat. With a pastry brush, spread a thin layer of the creme fraiche mixture on the top of each sandwich. With a spatula, transfer the sandwiches to the skillet, creme fraiche side down, and cook until golden brown on the bottom, 3 to 4 minutes. Lightly brush the tops of the sandwiches with the remaining creme fraiche mixture, flip them, and continue cooking until the bottoms are golden brown and the cheese is melted, 2 to 3 minutes more.
  • Let the sandwiches stand for 5 minutes to allow the cheese to set up. Lift the top slice and add the arugula. Slice the sandwiches in half and serve warm.