Melt butter in microwave for 50 seconds until melted, then add the brown sugar and mix together.

Sieve the plain flour into a bowl then add the melted butter and brown sugar, the white chocolate chips and vanilla extract (if you have no vanilla extract don't worry they still taste as good) and mix together until a dough is formed.

Make small balls out of the dough and place onto a baking tray. Then refrigerate for 30 minutes.

Melt white chocolate chips and with a spoon, cover the cookie dough balls then place on baking tray. You can use sprinkles to sprinkle on the top or use left over white chocolate to decorate the top. Place in the fridge for an hour until hardened then enjoy :)