Bubble and sqeak --gorgeous.
I dont add onions, only mashed potoato, veg and maybe bacon or whatever.
I cook mine till its lovely and crispy---scrumptious
thanks all for your replies, yes we do like onions, I always cook extra on a sunday so we can have BS for lunch on Monday, I will carry on doing it the way I have with the onions, and my neighbours can cook it their ways. WHF