Step 1

Preheat the oven to 180 C (350 F) standard / 160 C (320 F) fan-forced. Line two oven trays with baking or parchment paper.

Step 2

In a large mixing bowl, add butter, sugar and vanilla and beat with an electric mixer until smooth and creamy. Sift in flour and cornflour and mix until combined. Pop cookie dough in the fridge for 15 minutes.

Step 3

Chop or break apart half the chocolate into 16 small squares, reserving the rest for the chocolate drizzle. Wrap a piece of cookie dough around each square of chocolate and roll using your hands into a small ball. Place on prepared trays. Repeat with remaining cookie dough and chocolate.

Step 4

Bake cookies for 10-12 minutes or until golden on the edges. Transfer cookies to a wire rack to cool completely.

Step 5

Melt the remaining chocolate in the microwave, stirring every 20 seconds, until smooth. Drizzle over cookies.