To Make Cupcakes:

1. Position a rack in the middle of the oven and preheat to 350°F. Line a standard 12-cup muffin pan with paper or foil liners. (Or if using nut cups, as pictured above, lay them out on a cookie sheet.)
2. Stir together the flour, cocoa powder, baking powder, baking soda, and salt in a bowl. In a measuring cup, combine the milk and brewed coffee.
3. In a medium bowl, using an electric mixer on medium-high speed, beat the butter and sugars together until light and fluffy, 2-3 minutes. Add the egg and beat until combined. Add the flour mixture in 3 additions, alternating with the milk mixture in 2 additions, beating on low speed until just combined; scrape down the sides of the bowl as needed.
4. Divide the batter evenly among the prepared muffin cups, filling each about 2/3 full. (Depending on how full you fill them, this recipe will make 12-16 cupcakes.) Bake until a toothpick inserted in the center of a cupcake comes out clean, 16-20 minutes. Let the cupcakes cool in the pan on a wire rack for 5 minutes. Transfer the cupcakes to the wire rack and let cool completely before frosting.

To Make Frosting:

1. In a medium bowl, using an electric mixer on medium-high speed, mix together cream cheese, butter, vanilla and peppermint extract. Gradually add powdered sugar, mixing well until it’s all incorporated. Use immediately or refrigerate. The frosting will harden in the fridge, so plan on bring it back to room temperature if you must refrigerate it before frosting the cupcakes.