Preheat oven to 350°F and line a baking sheet with parchment.
Cream butter with brown and granulated sugar for 3 to 4 minutes.
Mix in eggs, vanilla, then peppermint extract.
Whisk flour, baking soda, and salt in another bowl.
Fold dry mixture gently into wet until combined.
Stir in white chocolate chips and crushed candy canes.
Scoop dough into rounded balls and place 2 inches apart.
Bake 10 to 11 minutes until edges are lightly golden.
Cool on a rack and sprinkle with extra peppermint.
