Preheat oven to 350℉. Line a baking sheet with parchment paper.
In the bowl of a stand mixer fitted with a paddle attachment, cream together the butter and sugars until smooth.
1 c unsalted butter, 1 ½ c brown sugar, ¼ c granulated sugar
Add the egg, vanilla and peppermint extract. Mix until just combined.
2 eggs, 2 teaspoon vanilla extract, ½ teaspoon mint extract
Add the flours, cocoa powder, baking soda, and salt. Mix on low speed until just combined.
1 ½ c all-purpose flour, ½ c cake flour, 1 c cocoa powder, 1 teaspoon baking soda, ¼ teaspoon salt
Fold in the chocolate chips.
2 c milk chocolate chips
Scoop out a rounded tablespoon of dough and roll it into a ball. Dunk the top in the crushed candy cane. Be sure not to roll it in the candy cane otherwise you will get a melted mess. You only want the top covered!
½ c crushed candy canes
Bake in the oven for 5-6 minutes. While they are baking, cut the marshmallows into quarters. Remove from the oven and place a quarter of a marshmallow in the center of each cookie. Return to the oven to bake an additional 3-4 minutes. Allow to cool slightly before moving to a cooling rack.
15 marshmallows