Made completely from scratch, these moist cupcakes are packed with tons of chocolate flavor and topped with a rich chocolate buttercream frosting!
You'll need a few ingredients to make this easy recipe, so round them up and let's get started!
Whisk the flour, sugar, cocoa powder, baking soda, and salt together.
Whisk together the egg, milk, vegetable oil, and vanilla extract.
Mix the wet ingredients into the dry ingredients.
Add the hot water to the batter. It will be very thin.
Fill the cupcake liners halfway and bake for 18-23 minutes.
Cool the cupcakes in the pan for a few minutes before transferring to a cooling rack.
Beat butter until smooth, then add melted chocolate, cocoa powder, powdered sugar, heavy cream, and salt.
Pipe the frosting onto the cupcakes.
Store cupcakes at room temperature for up to 24 hours, then refrigerate.