-
Preheat the oven to 350 F. Line a muffin pan with cupcake liners.
-
In a large bowl, combine the sugar, flour, baking soda, baking powder, salt, and cocoa powder.
-
Add the egg, milk, oil, and vanilla extract and beat on medium speed until fully combined, about 2 minutes.
-
Stir in boiling water. The batter will be thin and runny.
-
Pour batter into the prepared cupcake liners and bake for 15 minutes or until a toothpick inserted into the center of the cupcake comes out clean.
-
Cool cupcakes in the pan for 10 minutes before transferring to a wire rack to cool completely.
-
Once cupcakes have cooled, use an apple corer to remove the center of each cupcake.