Preheat the oven to 350 degrees F. Line your cupcake pan with cupcake liners. Set aside.
Whisk the cocoa powder, flour, basking soda, baking powder, salt and cinnamon in a large bowl until completely combined. Set aside.
In your stand mixer, whisk the eggs, granulated sugar, brown sugar and vanilla together until completely smooth, about 2-3 minutes.
Replace whisk with paddle attachment then add milk and brewed coffee and mix until combined.
Add half of dry ingredients and mix until combined, then add other half and mix until combined. Be sure not to overmix.
Use cookie scoop to add batter to cupcake liners in pan. Bake for 18-22 minutes or until toothpick is clean.
Remove from pan and let cool completely on cooling rack until ready to frost.
Frost cupcakes and add crushed peppermints for decoration and deliciousness!