Thank you all so much!

We normally have dinner round 5ish, 5:30 at the latest, bedtime is 7pm... We have dinner then casue Miss H is ready for bed by 6 and its easier to feed both at the same time.
Usually we do have our big meal at lunchtime too, as DH goes to work after lunch and he uses lunch as his main meal too.

buttered bread sounds good, I reckon gruel might be too labour intensive for a second option

Im going to stick to my guns and get her eating dinner, actually all I really want at this point is for her to actually try dinner before she makes up her mind as to what its like! I wouldnt mind giving her something else, or having her skip dinner if she just tried what I was giving her just once.

I think she must be hungry, given the chance she will eat 3 whole mandarins by herself instead of dinner, But we might shake things up a bit tomorrow and she how she goes I think. Anything can be better than tonight. After not eating her dinner for over an hour and it going all over the kitchen, she ate 2 bananas!
Worst thing is that I know she loves the food Im giving her, she always has!