1. Preheat the oven to 350°F. Grease the bottom and sides of an 8-inch or 9-inch square pan.

2. Prepare brownie mix as directed on package, stir in the peppermint extract, and spread the mix into the prepared pan.

3. Bake as directed, 21-30 minutes, or until a toothpick inserted in the center comes out with a few wet crumbs. Do not cook until dry!

4. Break the chocolate bar into squares. When the brownies are removed from the oven, sprinkle the chocolate squares over the brownies and let them melt, about 5 minutes. Spread the melted chocolate over the brownies and sprinkle the crushed candy canes on top. Let cool completely, cut into squares, and serve. Store in an airtight container.