Combine in a medium mixing bowl, the flour, cocoa powder, baking powder, and salt. Whisk until combined and set aside.
1¾ cup All Purpose Flour, ½ cup Cocoa Powder, 1 teaspoon Baking Powder, ½ teaspoon Salt
Add to a large mixing bowl, the softened butter and granulated sugar. Cream the two ingredients and then whisk in the eggs, one at a time. Whisk in the vanilla and peppermint extract.
¼ cup Unsalted Butter, ¾ cup Granulated Sugar, 2 large Eggs, 1 teaspoon Vanilla, ½ teaspoon Peppermint Extract
Pour the dry ingredients and chocolate chips into the wet ingredients.
½ cup Chocolate Chips
Mix the biscotti batter with a hand blender or spatula until well combine and dough forms. Divide the batter in two.
Baking the Biscotti
Line a baking sheet with parchment paper. Shape 2 logs of dough, measuring 10"x 2.5".
Bake the cookie logs in a preheated 350F oven for 25 minutes or until set. Remove from the oven and let cool for 10-15 minutes.
Transfer the baked logs to a cutting board. Cut each log into 12 slices.
Place the biscotti, cut side down, on the baking tray. Lower the oven temperature to 325F. Bake the biscotti for 20 minutes, flipping them half way through.