For Chocolate Cupcakes:

In bowl,place sifter,add all-purpose flour,cocoa powder,baking powder and baking soda,sift together, mix well and set aside.

In mixing machine,add butter,caster sugar and beat.

During beating,add egg,vanilla essence,milk and dry ingredients gradually and beat until well combined.

Take a cupcake try and place linings,add batter and tap tray for 2-3 times on working counter (makes 10-12 cupcakes).

Bake in preheated oven at 175 C for 20-25 minutes.

For Chocolate Buttercream Frosting:

In mixer machine,add butter and beat until its light and fluffy (4-5 minutes).

Add cocoa powder,vanilla essence,salt,chocolate and beat for 3-4 minutes.

Add one cup icing sugar at a time,start at low speed until combined and beat on higher speed for 2-3 minutes after each addition and keep beating until it holds its form.

Put the cupcakes on a cooling rack to cool,when cooled,pipe the frosting over the cupcakes and decorate with sprinkles or chocolate chips.