Preheat oven to 175°C
With your stand mixer cream the butter and sugar together until fluffy (about 5 minutes).
Add the eggs beating well between each addition. Add vanilla and beat again.
Add the flour in four batches alternating with the addition of the milk. Beat well between each addition.
Fill cupcake cases to half way and bake for 15-20 minutes. Checking after 15 minutes to see if a skewer comes out clean.
Cool on a wire rack.