Preheat your oven to 350°Fahrenheit and line your cupcake tin with liners.
Sift the flour, brown sugar, cocoa powder, baking soda, baking powder and salt into a mixing bowl
⅔ Cup All-Purpose Flour, ⅔ Cup Brown Sugar, ½ Cup Cocoa Powder, ⅔ teaspoon Baking Soda, ⅓ teaspoon Baking Powder, ½ teaspoon Salt
In a separate bowl whisk together the orange zest, buttermilk, oil, and egg until smooth. Pour the wet ingredients into the dry and mix until fully incorporated.
1 Large Egg, 3 Tablespoons Orange zest, 2 tablespoon Neutral Oil, ⅔ cup Buttermilk
Fill each mini cupcake liner ½ way with batter before placing in the oven and baking for 13-15 minutes. If using regular sized cupcake liners, bake for 20-23 minutes. Make sure to check that the cake is fully baked by testing with a toothpick before removing it from the oven and allowing it to cool completely.