• Preheat the oven to 350°.

Cookies

• Combine cake mix and  flour in a large bowl and whisk to combine. Add eggs, and melted butter, mix using an electric mixer until you have a thick dough.
• Using a large cookie scoop, measure out 12 cookies. Press the cookie dough into a thick round disc. Bake 6 cookies at a time. Place the cookies on a silicone mat {or parchment} lined baking sheet for 11-13  minutes or until set.
• Remove cookies from the oven and allow them to cool completely on the baking sheet.

Frosting

• Once the cookies are cooled, combine the first 3 frosting ingredients in a small saucepan over medium heat and whisk until the mixture has melted.  Remove from heat, add vanilla and  powdered sugar, whisk until smooth. 
• Pour frosting over cookies.  Use a knife or spoon to move excess frosting and be sure that each cookie is completely covered. While the frosting is still wet, add a Peppermint Square to the top of each cookie, pressing down slightly.
• Let the frosting set and serve.