Beat butter and sugar until light and creamy. Add egg and vanilla essence, beat well.
Then add sifted flour and mix to a soft dough, drop with rounded tsp full of mixture into peanuts.
Now roll into balls put on greased oven tray. Allow on room temperature for spreading.
Then press half a cheery on top of each. Bake for 15 minutes on 180 degree C. Yummy, crispy, nutty biscuits are ready, enjoy!