Wellll, I make me own bread rolls using granary flour with extra rolled oats/barley/rye (I use a breadmaker though)
Low fat spread.
Any kind of meat.
Lettuce & tomato.
A meal in itself that.
And DON'T smother it in mayo, cause that's about a million caloriesright there.
Having an oaty roll means it's quite dense but fills you easier: last longer between sarnies.