For best results use the ExactSlice ™ KitchenAid Food Processor.

Preheat the oven to 180°C (160°C fan forced).

Line a square cake pan with baking paper on the base and sides (allowing the paper to come up and over the sides - this will act like handles and will help you remove the slice from the pan).

Attach the multipurpose blade to the work bowl of the food processor. Add both the flours, coconut and sugar. Cover and quickly process until just combined.

Add butter through the small mouth feed and process until the dough forms a ball. Remove the dough and press with your fingertips into the base of the pan.

Bake for 10 minutes. Remove from oven and set aside to cool.

Place ingredients into a medium heavy based saucepan. Cook over a low heat stirring with a wooden spoon for 5 minutes (make sure you stir constantly or the mixture will burn). Pour over the base.

Put back into the oven and bake 25 minutes. Carefully remove from the oven and set aside on a rack to cool. Do not remove from the pan.

Put the chocolate melts and copha into a medium sized glass heat proof or plastic microwave proof bowl. Place in the microwave and cook on medium power for 2 minutes. Stir until smooth and glossy.

Pour over the slice and refrigerate until set.

Using the paper as handles remove from the pan and cut into squares.