Flat cupcakes

[Nummy]

When i make plain sponge cupcakes (using a tried and tested Bero recipe), they seem to rise really well to start with but seem to collapse a little bit and end up flat.

what am i doing wrong?

[jb190281]

are you using self raising flour Nummy?

[Postdog]

wrong section to start off with....

[redcrx]

are you taking them out before they are fully cooked?

or opening oven door to check them whilst cooking?

[Nummy]

Apologies Postdog...i meant to post ot in Food and Drink.

Can it be moved?