Use a wok or a big frying pan, so eventually all ingredients will fit in. Start by melting the butter over medium/high heat, and after it's melted add in the sugar and stir untill combined, then add in the egg and keep stirring vigorously for 2 minutes.
Add all the dates to the pan and stir for another 2 minutes, then turn off the heat and add the cookie bits/ walnuts and syrup. Combine.
Grease a 23cm round cake tin (or anything similar size that you have available), add the mixture and press in with a spoons round side. Put in the fridge to chill and set, then sprinkle with desiccated coconut and slice.