Vanilla cupcake with Nutella filling!

For my first post I made filled cupcakes!
Here's the recipe:

Makes 12

110g self raising flour (sifted)
110g caster sugar (personally I use less as I don't like them too sweet, this is up to you)
110g margarine (softened)
1tsp baking powder
2 large free-range eggs
1tsp vanilla essence

Pre-heat oven 160'c
Mix all together in a bowl until creamy consistency using an electrical whisk
Scoop into casings and bake for 20mins until golden brown

Nutella filling:

225g icing sugar (must be sifted!)
50g unsalted butter
50g nutella

Cut out a circle from the top of the cupcake, scoop out the cake
being careful not to break the circle, trim off excess cake on circle so that you are left with a 'cake lid'
Fill the hole with nutella icing and then put the circle lid back on top
Then cover the cupcake with either nutella icing or any other icing you fancy!
I went for nutella icing in top with crushed nuts! :)