Preheat the oven to 35o℉. Line the cookie sheets with parchment paper and set aside.
Brown the butter in a small saucepan for 15 minutes or until brown and then set aside.
In a large-sized mixing bow mix together the white sugar, cocoa powder, egg, vanilla extract, coffee, and browned butter.
In a medium-sized mixing bowl whisk together the flour, baking powder, and salt.
Gradually add the flour mixture to the large bowl mixing with an electric hand mixer until combined while scraping the sides with a rubber spatula as needed.
Fold in the one cup of the semi-sweet chocolate chips.
Using a medium-sized cookie scoop, place the dough onto the prepared cookie sheets. Press down a little to create a more compact and uniform shape.
Bake for 8-9 minutes.
Allow the cookies to cool on the cookie sheet for 5 minutes before placing them on a wire rack to cool.
Melt the white chocolate in a glass bowl in the microwave for 15 seconds and mix. Repeat this 3 times or until the chocolate has melted. Add the peppermint extract and mix it into the melted white chocolate.
With a spoon, drizzle the white chocolate over the cookies in a zig-zag pattern.
Immediately sprinkle the crushed candy canes over the cookies.