Preheat oven to 180°C. Grease a 18cm x 18cm square cake tin and line base and sides with baking paper, extending paper 2 cm above edge of pan.
Step 2
Place biscuits in bowl of the food processor and process to a fine crumb, add melted butter and pulse until combined.
Step 3
Press biscuit mixture into base of prepared tin and refrigerate whilst preparing the filling.
Step 4
In a medium bowl combine coconut, condensed milk and egg. Mix well. Pour mixture over choc ripple base.
Step 5
Bake for 25 minutes. Allow to cool.
Step 6
Place chocolate in microwave safe bowl and heat on medium for 30 sec bursts until chocolate is melted. Pour over coconut layer. Chill before cutting into slices.