Ingredients

3 tablespoons white wine vinegar
1 teaspoon Dijon mustard
1/4 teaspoon kosher salt, plus more for seasoning
1/4 teaspoon freshly ground black pepper, plus more for seasoning
3 tablespoons pure olive oil
1/4 pound Cabrales blue cheese, crumbled, plus 4 thin slices blue cheese
1/4 pound frisee, washed and dried
2 tablespoons butter
4 large eggs
8 slices ciabatta or Italian bread
8 thin slices prosciutto

Instructions

Whisk together vinegar, mustard,

1/4 teaspoon salt, and 1/4 teaspoon pepper in a medium bowl. Whisk in the olive oil until
combined. Fold in the crumbled blue cheese. Add the frisee and toss well to coat the
frisee with the dressing. Season with more black pepper, to taste.

Heat a little of the butter in a small nonstick skillet over medium heat. Gently crack an
egg into a small dish, and then add to the pan with the butter and cook until the white is
set and the yellow is slightly firm, about 2 minutes. Season with salt and pepper and then
gently turn the egg over and continue cooking for 1 minute. The yolk should still be
slightly runny. Repeat with remaining butter and eggs.

Place the bread on a flat surface and top each with 1/4 of the frisee mixture, followed by
2 slices of prosciutto, and then an egg. Place a thin slice of blue cheese on top of the
egg and garnish with ground black pepper. Place another piece of bread on top. Repeat to
make a total of 4 sandwiches.