If you love peppermint, these cookies have all the peppermint you could possibly need! Frosted Peppermint Cookies have a buttercream peppermint frosting and lots of crushed candy canes on top.
Preheat oven to 350 degrees. Line a baking sheet with parchment paper or a silicone baking mat. Set aside.
In a large bowl, use a mixer to beat together the butter and sugar until creamy and light yellow in colour. (About 4-5 minutes.)
Add the eggs one at a time and beat into the butter and sugar mixture.
Beat in the peppermint extract.
Sift in the flour, salt, and baking powder. Beat into the wet mixture until well combined.
Portion the cookie dough into heaping tablespoons. Roll into a ball and place onto the prepared baking sheet.
Press down on each ball until ball is flattened to just over 1/4 inch thick. (I used the bottom of a drinking glass.)
Bake for 10 minutes. Remove from oven and allow to cool for 2-3 minutes before transferring to a wire cooling rack to finish cooling.
Once completely cooled, beat the butter until the colour turns to a very pale yellow - at least 5 minutes of continuous beating!
Beat in the confectioner's sugar one cup at a time until very well incorporated.
Next, beat in the peppermint extract.
Using an offset spatula, smear the desired amount of frosting onto a cookie. Place the cookie onto a baking sheet lined with a wire cooling rack. Sprinkle generously with crushed candy canes.
Allow the frosting to set for at least 2 hours before transferring to food-safe storage container.