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Truffle Grilled Cheese Sandwiches

Truffle grilled cheese sandwiches are my favorite thing to make on chilly rainy days when all I want to do is curl up on the couch in a blanket and watch an entire season of a show on Netflix.
Course Sandwich
Cuisine American
Keyword fontina, grilled, grilled cheese, truffle
Prep Time 5 minutes
Cook Time 10 minutes
Servings 2


  • 2 tablespoons extra-virgin olive oil
  • 2 cup sliced crimini, baby bella mushrooms
  • Kosher salt, as needed
  • Freshly ground black pepper, as needed
  • 2 tablespoons black truffle oil
  • 4 ½”-thick slices sourdough bread
  • 3 tablespoons unsalted butter
  • ½ pound Fontina cheese, thinly sliced
  • ½ packed cup wild arugula


  • Heat a large skillet over medium heat, add olive oil and heat through. Add the mushrooms and sauté, stirring occasionally, about 3 minutes.
  • Season with salt so the mushrooms release their moisture and they begin to shrink. Increase the heat to high and continue to sauté until the mushrooms are golden brown, about an additional 3 minutes. Season with pepper then remove from the pan to a small bowl and set aside.
  • Heat a large skillet or griddle over medium-low heat, add the truffle oil and heat through. Thinly spread one side of each bread slice with butter.
  • Place half of the slices of bread, butter-side down, on the pan or griddle. Divide the cheese evenly on top of the bread slices. Then divide the mushrooms and arugula on top of the cheese. Top the sandwiches with the second slice of bread, butter side up.
  • When the underside is golden brown, about 4 minutes, use a spatula to flip the sandwiches over. Gently press down on the sandwiches to help melt the cheese, but be careful not to smash it. Cook until the second side is golden brown and the cheese is melted.
  • Cut both sandwiches in half and serve immediately. It always goes well with a side of tomato soup (optional).