Prep – Line a square baking pan with parchment paper.
Melt – Add the chocolate chips to a bowl and microwave until smooth. Microwave the frosting until fully melted.
Mix – Add the extract to the frosting and stir well.
Combine – Add some of the mint chips and the frosting to the chocolate and stir well.
Chill – Pour the mixture into the prepared pan, top with remaining mint chips, and chill for 2 hours.