Preheat your oven to 180°C (160°C for fan ovens) or 350°F and line a cupcake tin with 12 cases.
In a large bowl, cream together the butter, sugar and vanilla extract until soft and fluffy.
Mix in the flour and the eggs, a little bit at a time, until you have a smooth, thick cake batter.
Divide the batter between your 12 cases and bake for 20-25 minutes until a toothpick comes out clean. Transfer to a wire rack to cool.
Frosting:
Mix the butter, icing sugar and milk together until smooth and fluffy. Then stir in the vanilla extract.
Transfer the frosting to a piping bag fitted with a large star nozzle then pipe some onto each cupcake.
Top with sprinkles and snowflake decorations and enjoy!
Video
Notes
I used Cake Decor's wafer snowflakes but you can make your own by piping royal icing or white chocolate snowflake shapes onto baking paper. Leave to dry then peel them off the baking paper.