Cream Butter and powdered sugar together, until well combined, add in whisked egg, and vanilla essence ;

Sieve flour, corn flour, salt into a clean bowl, add into butter cream mix, beat on low speed until thoroughly combined, to form a dough.

Bring out of the bowl and roll out dough on a floured surface to a thickness of 1cm, cut with Christmas tree cutters or any desired shaped cookie cutter.

Place on lined baking tray. Preheat Oven and bake for 15-18mins