Jello recipes can be ghastly but the poke cakes can be cool.
For a poke cake, you bake any kind of cake you wish then 'poke' the top of the cake and pour in semi-congealed Jello. The contrast of color of the cake and the color of the Jello provided the drama.
A devils-food poke cake with cherry or raspberry Jello was always a Halloween triumph. The flavors went well together and a cake that seemed to be oozing 'blood' when it was cut was always a hit.
On the other hand, I have seen recipes for congealed salads that included gummy bears cavorting in a broccoli forest.
No. just no.