They look like popovers
I guess that IS what they are but isn't it much more refined to say you are having 'Yorkshire Pudding' rather than popovers? lol
I just checked some popover recipes online - I'll stick to the Yorkshire Pudding ones with the bit of fat on the bottom - getting that cavity in the middle for 'au jus' sauce or Jam - yum...(Yup, had some for breakfast - de-lish!)
Apparently I grew up in a 'popover' deprived family - I am not amused :>)