I googled & this is what I found:
I do one simular to this at my Pampered Chef shows...
dump one small can of your favorite pie filling into your cake pan (stone in my case), then dump one box of cake mix (NOT the kind with pudding in the mix!) <which ever flavor you prefer---like choc w/cherry filling> Then pour over the top 21 oz of 7-up...do not mix! then cook it at 400 for about 30 to 45 min...depends on what your are cooking it in and your oven. Very yummy!
I don't know who the consultant is. I just copied & pasted it.
If you try it let us know how it is.