The last two cake I have made have sunken badly in the middle. Different recipes. Purchased new baking powder today looking for a cure and my chocolate cake sits on the cooling rack sinking more and more with every passing moment.
I pray the cake Gods will send me some angels soon cause this is really depressing.
Last cake, I carved some of the sides and put it on top the cake then frosted it and nobody noticed. Actually said it was the best cake they had ever eaten.
What size is it? Did you use a heating core or strips? I only use the core , but gave heard about yhe strips. Chocolate seems to be the worse one for me sinking. I noticed too that they sink more when it's humid out. I hope you find a cure!