3 chicken and gruyeere sandwiches Recipes

skinless, boneless chicken breast halves, freshly ground black pepper, prosciutto , cut into 4 thin slices, sourdough bread, butter, softened and divided, gruyere cheese, shredded (about 1/2 cup), dijon mustard, arugula leaves, sliced shallots, fresh lemon juice, red-skinned pear, sliced

grilled chicken breast strips (such as louis rich), bottled barbecue sauce, onion buns (such as earthgrains), halved and toasted, shredded gruyere cheese