Preheat oven to 350 degres

Mix butter and sugar together until smooth

Add the 5 eggs to the mix

In a separate cup mix milk and vanilla together

Add the milk and the flour to the little by little while interchanging between flour and milk

Mix throughly

Greese pan with butter and flour or use harina pan which is better than flour

Pour mix into greese pan and bake till toothpick comes out clean