01 - Set the oven to 350°F and line two baking sheets with parchment paper.
02 - Whisk together flour, cocoa powder, baking soda, salt, and espresso powder in a medium bowl.
03 - Using an electric mixer, beat butter, granulated sugar, and brown sugar until light and fluffy.
04 - Add eggs one at a time, then mix in peppermint and vanilla extracts until fully combined.
05 - Gradually add dry ingredients to the wet mixture, mixing only until combined.
06 - Fold semi-sweet chocolate chips into the dough evenly.
07 - Scoop tablespoon-sized portions of dough onto the prepared sheets, spacing about 2 inches apart.
08 - Bake for 10 to 12 minutes until edges are set but centers remain soft.
09 - Allow cookies to cool on baking sheets for 5 minutes, then transfer to wire racks.
10 - Drizzle melted white chocolate over cooled cookies and sprinkle with crushed candy canes. Let chocolate set before serving.