Grease & line a 20 cm (8") square baking tin with baking paper and set aside (see notes).
Place chopped biscuits into the bowl of a food processor, and pulse 2 -3 times to start the biscuits breaking up. Add baking paste to biscuit mixture at this point, then continue to process until biscuits are a fine crumb.
Add cream cheese to biscuit mixture, and process until completely mixed. The mixture will go from white with brown flecks throughout, and then turn to a creamy brown when fully mixed.
Place biscuit mixture into prepared tin, pressing into the corners and then even out the top using a silicon spatula (see notes).
Sprinkle top of slice with desiccated coconut and refrigerate for 1 ½ - 2 hours, then remove from tin using baking paper to lift, cut into squares.
Keep refrigerated and serve cold.