Butter cookies - by Elsie Lee

Butter cookies for teachers done by my 14 yr old son .mummy is Feeling proud
Recipe
400g self raising flour
250g butter
120g icing sugar
1 egg yolk
1/2tsp vanilla essence

1) cream butter n icing sugar until well combined
2)put few drops of coloring n vanilla essence to the yolk, mix well
3)pour egg mixture to batter
4) gradually add in the flour n combined well