Combine dry ingredients by whisking together powdered sugar and cocoa powder in a bowl until fluffy and light.

Mix wet ingredients by adding corn syrup, salt, and peppermint extract to the dry mix; stir for 2-3 minutes until thick.

Knead the dough on a powdered sugar-dusted surface until smooth and pliable.

Shape the patties into discs about ¼ inch thick.

Chill the discs on a parchment-lined sheet for about 30 minutes.

Melt chocolate chips in a microwave-safe bowl, stirring until smooth.

Coat each disc in melted chocolate and let excess drip back.

Place coated patties back onto parchment, optionally adding crushed peppermint.

Chill in the refrigerator until chocolate hardens, about 20-30 minutes.

Store in an airtight container in the fridge.