Vanilla Butter Cake

This is a really old recipe and I am not sure how I got hold of it. Its great.

INGREDIENTS
125g butter
3quarter of cup milk
3 eggs
1 tbl vanilla essense
1 cup castor sugar
1 and half cup self raising flour

METHOD
Grease a deep 19 cm square cake pan, line base with paper (grease paper).
Combine butter and milk in sauce pan, stir constantly over heat until butter is melted. Remove from heat, cool to room temperature.
Beat eggs  and essense in small bowl with electric mixer until thick and creamy, gradually add sugar, beat until dissolved between each addition.
Transfer mixture to large bowl, stir in half the sifted flour and half the butter mixture, then remaining flour and butter mixture. Pour into prepared pan.
Bake in moderate oven for about 45 min.
Stand 2 minutes before turning on to wire rack to cool.
When cold , dust with sifted icing sugar.

Enjoy.