Step 1 Pre heat oven to 180°C. Grease and line base and sides of a 21cm x 21cm square cake tin with baking paper, extending 2 cm above the edge of the pan.
Step 2 Place Arnott’s Farmbake Chocolate Chip Fudge cookies in bowl of food processor and process to a fine crumb, add melted butter and pulse until combined. Press biscuit mixture into base of prepared tin and refrigerate whilst preparing the filling.
Step 3 In a medium bowl combine condensed milk, coconut and egg. Mix well. Pour mixture over biscuit base. Bake for 25 mins, allow to cool.
Step 4 Place chocolate and butter in microwave safe bowl and heat on medium for 30 sec bursts until chocolate is melted. Pour over coconut layer. Chill. Cut into pieces.