I Lisa. I took the cowards way out and made the cube as a topper. I stacked bought Rice Krispie Squares and then cut multiple squares at a time by using my pink strip cutter, going one way and then the other (if that makes sense). 
You probably don’t want to make one like this but it is an alternative to the cake as cube way. However you decide to do it, you will end up sick of squares – that is a fact! lol!!! :-D Good luck!! :-) x
Julia Hardy
