Bread bowl + chilli/stew/any hearty soup. Hollow out a bloomer loafer of your chosen variety and pour it in, with the added benefit of some bread for dipping. Me and my housemate made a fuck-hueg chilli concarne a few months back which left us with loads of leftovers. Next day, I'm quite peckish around lunch time. I remember the leftovers. Now normally I find leftover chilli to be a little meh as leftovers go, but I had a fantastic idea. I went to the Co-op around the corner, picked up a cheddar and jalapeno bloomer loaf, got home, carved out a bowl and proceeded to eat like a king. ************ filled me up for the rest of the day. The only issues that arise are when you overestimate how much you can eat and you don't finish it. The bread ends up turning into more of a cold paste after a while and becomes a harrowing experience to eat.
Runners up include: Grilled cheese/toasties, anything containing either pulled pork or steak and pizza