Pre-heat oven on gas mark 4/170 °C and then line a cupcake tin with paper cases.
Add the butter and sugar to a mixing bowl and then mix until incorporated. Then add the eggs and mix in.
Once the eggs are incorporated, add the flour and fold in until incorporated then add the melted caramilk chocolate and fold in.
Then using an ice cream scoop, add the mixture to each case and then put in the oven for 20 minutes or when a skewer comes out clean
Once the cakes are cooked, remove from the oven and leave to cool for a few minutes in the tin then transfer to a cooling rack.