Fridgecake - Search for the BEST recipe!

Having at last moved into a new apartment and unpacked most of my kitchen things, I decided to try a new fridgecake recipe. I have been searching for the best recipe/combination of ingredients and the one below is my latest experiment/attempt - if anyone knows of a top notch recipe please let me know!

Fridgecake is a chocolatey treat that I loved when I was a child, though my mother herself did not make it very often - I mainly had it at the houses of friends. I recently discovered that it has Scottish origins/connections and is called Tiffin. It is a fairly versatile recipe; you can play around with the ingredients you wish to include, so long as you keep the basic quantities the same. The recipe below is for a fridgecake that I made last night.

1 C (2 sticks) butter/margarine
2 T honey (golden/corn syrup works too)
2 T cocoa powder (or several slabs melted chocolate)
1 package (200g) *Marie biscuits/cookies (several options for this - see below!)
1/2 C powdered sugar
1/2 C coconut flakes
1/2 C raisins
1/4 C nuts

Melt the butter and honey together. Add the cocoa powder and mix well.
Place the Marie Biscuits in a plastic bag and beat/crush until it is a mixture of crumbs and chunks. Add this to the butter mixture and combine. Add the remaining ingredients and mix well.
Press firmly into a 7x11" brownie pan (or any dish of a similar size) and refrigerate overnight.
Cut into squares and enjoy! It is best to keep them stored in the fridge...unless of course you finish them all at once ;)

*There are several different options for the crushed cookie/biscuit ingredient. I have only ever used Marie Biscuits, which can be found in Zimbabwe. I was delighted to find them in American grocery stores too! - they are usually in the International or Spanish Foods section with the GOYA products. Other possibilities vary depending on where you live:

UK - Digestives
South Africa - Tennis Biscuits
USA - Graham Crackers