Step 1

Preheat the oven to 180°C. Grease a 20cm square cake pan. Line base and the two opposite sides with baking paper, extending the paper 5cm over edge of pan.

Step 2

Combine cake mix, coconut and butter in a medium bowl. Press mixture evenly over base of prepared pan. Cook for 15 minutes, or until lightly browned. Cool slightly.

Step 3

Spread apple evenly over base, then spread sour cream evenly over apple and sprinkle with cinnamon sugar. Cook for further 20 minutes, or until sour cream has set.

Step 4

Cool in pan. Cut the slice into fingers to serve.