01 -
Put parchment paper on a cookie sheet. Keep it aside for later.
02 -
Using a stand mixer, mix melted butter, sugar, and vanilla. Add eggs one at a time, making sure each is well combined before adding another.
03 -
Sift together salt, baking powder, and flour. Slowly mix these dry ingredients into the wet mixture until barely combined.
04 -
Gently fold in the chopped Andes peppermint bits so they are spread throughout the dough.
05 -
Cover the dough and chill it for around half an hour.
06 -
Warm up your oven to 350°F. Divide the dough into two. Lightly grease your hands, then roll the dough into two logs, roughly 2½ by 15 inches each. Lay them on the parchment-lined cookie sheet, leaving about 3–4 inches between them.
07 -
Bake the logs for 30 minutes. Let them cool on the cookie sheet for 5 minutes, then move to a wire rack to cool for about 15 minutes more.
08 -
Turn your oven down to 325°F. Place the cooled logs on a cutting board and slice them into pieces about ¾ inch thick using a serrated knife.
09 -
Lay the biscotti slices with the cut side facing down on a fresh parchment-lined sheet. Bake for about 20–25 minutes, flipping the slices halfway through at 15 minutes, so they crisp up evenly. Cool completely on a wire rack.
10 -
In a microwave-safe dish, melt the white chocolate. Start with 30 seconds, stir it, then continue with 15-second intervals until smooth.
11 -
Take a biscotti piece, dip its bottom into the melted chocolate, let any extra drip off, and place it onto a tray lined with wax paper to set.
12 -
Speed up the chocolate setting by putting the tray in the fridge for 10–15 minutes.
13 -
Store biscotti in a container with a tight lid so they stay fresh.