Prepare a 9x13-inch (23x33cm) about 2.5 to 3 inches deep - rectangle baking dish. This helps keep the biscuits in place.
Arrange a single layer of Marie biscuits (or your favorite plain tea biscuits / digestive biscuits or graham crackers) breaking a few biscuits as needed to fit the pan.
Spread about one-third of the pudding mixture evenly over the biscuits and smooth it with an offset spatula.
Sprinkle a generous layer of toasted shredded coconut over the pudding, followed by a layer of pineapple chunks (I used canned pineapple, well drained).
Repeat the layers two more times biscuits, pudding, toasted coconut, and pineapple smoothing each pudding layer before adding the next.
Finish with a layer of vanilla whipped cream, spreading it evenly over the top. Decorate with more toasted shredded coconut and pineapple chunks.
Cover tightly and refrigerate for at least 24 hours before serving. This chilling time is essential, allowing the biscuits to soften into tender, cake-like layers while the flavors meld together beautifully. Slice and serve chilled.