Step 1

Preheat oven to 180C.

Step 2

Line baking trays with baking paper.

Step 3

Combine butter, sugar, vanilla and egg in a bowl.

Step 4

Add flour and stir until combined.

Step 5

Cover and refrigerate for 15 minutes until firm.

Step 6

Roll teaspoons of mixture into small balls. Place on tray and press down slightly.

Step 7

Top with Smarties, sprinkles, or chocolate chips.

Step 8

Bake for 10-12 minutes until light golden.

Step 9

Stand on tray for 5 minutes then transfer to wire rack to cool.