Preheat the oven at 180C and line a 12 hole muffin tray with liners or use the stand alone muffin cups like the green ones in picture. I swear they are super awesome!
Mix flour, baking powder, castor sugar and both the chocolate chips in a bowl and keep aside.
In a separate bowl mix together the wet ingredients i.e milk, eggs (or yoghurt) and butter. Give it a slight whisk.
Now mix the dry and the wet ingredients together till just mixed. Don't over mix it.
Fold in the strawberries and the champagne if you are using.
Pour in the prepared mould and bake for about 15-20 minutes till a tooth pick comes out clean.
Leave it for cooling completely and while its cooling, go ahead and eat one. If you are anything like my son and I, you will have only a couple left for frosting!
To make the frosting, using a handmixer beat butter till light and fluffy.
Add sugar in three batches and beat till well incorporated.
Add the vanilla and the strawberry puree and beat for another minute, if you feel its too thin, add some more icing sugar gradually till you reach the desired consistency.
Using a star nozzle, pipe the frosting on the cupcakes and decorate with sprinkles.