I followed a friends recipe for Hummingbird chocolate cup cakes and used all the right ingredients (except semi-skimmed milk instead of whole milk - but added a little cream - it's what I had!)
And as our oven is quite fierce turned the recommended temperature down a bit. However her cakes are lovely and moist and stay together and mine tasted lovely but fell in half (with the bottom half still attached to the paper cases!!)
Why do you think it is? Any ideas - otherwise will just have to keep making them and experiment with different variables! (At least the kids will eat them!)