Just curious if anyone has tried using a smaller cake pan as a heating core, and how it worked out. Like maybe putting a 4"-6" pan in the center of a 16" pan and filling both with batter. Then using the smaller cake to fill the hole in the 16" after they bake. It seems like it may work better than flower nails or an actual heating core on larger cakes.
This is mainly just for curiosity, because I don't need to make a cake that big, but if I don't get an answer I may do it just for the heck of it to see if it works.
I have baked many many 16” rounds w/o ever using any heating core I would think your plan would work but see no real need for it
I see no reason why it wouldn't work just like a heating core.