Preheat the oven to 350 degrees F and line an 8x8 inch baking pan with parchment paper.
In a large pan over a low heat, melt the butter and then add the chocolate chips.
Stir constantly until the chocolate has fully melted with the butter.
Add the sugars and stir again until the mixture doesn't look as grainy, about 5 minutes.
Add the eggs one at a time whisking them in to the chocolate batter without any lumps.
Add the peppermint extract.
Add the flour mixture in two stages slowly mixing until no lumps are visible.
Pour the batter into your prepared baking tin and place in the oven.
Bake for 30 minutes.
Sprinkle with crushed candy canes as soon as the brownies come out of the oven.
Let cool before slicing into squares.